Relevant bibliographies by topics / RG Flows

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'RG Flows'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'RG Flows.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "RG Flows"

1

Gukov, Sergei. "RG flows and bifurcations." Nuclear Physics B 919 (June 2017): 583–638. http://dx.doi.org/10.1016/j.nuclphysb.2017.03.025.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Fredenhagen, Stefan. "Organizing boundary RG flows." Nuclear Physics B 660, no. 3 (June 2003): 436–72. http://dx.doi.org/10.1016/s0550-3213(03)00226-8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Kiritsis, Elias, Francesco Nitti, and Leandro Silva Pimenta. "Exotic RG flows from holography." Fortschritte der Physik 65, no. 2 (January 20, 2017): 1600120. http://dx.doi.org/10.1002/prop.201600120.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Gimon, Eric, Leopoldo A. Pando Zayas, and Jacob Sonnenschein. "Penrose Limits and RG Flows." Journal of High Energy Physics 2002, no. 09 (September 19, 2002): 044. http://dx.doi.org/10.1088/1126-6708/2002/09/044.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Argurio, Riccardo. "Comments on cosmological RG flows." Journal of High Energy Physics 2002, no. 12 (December 19, 2002): 057. http://dx.doi.org/10.1088/1126-6708/2002/12/057.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Dhar, Avinash, and Spenta R. Wadia. "Noncritical strings, RG flows and holography." Nuclear Physics B 590, no. 1-2 (December 2000): 261–72. http://dx.doi.org/10.1016/s0550-3213(00)00485-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Sagkrioti, E., K. Sfetsos, and K. Siampos. "RG flows for λ-deformed CFTs." Nuclear Physics B 930 (May 2018): 499–512. http://dx.doi.org/10.1016/j.nuclphysb.2018.03.013.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Rachwał, L., and R. Percacci. "Holographic RG flows for gravitational couplings." Fortschritte der Physik 62, no. 9-10 (May 20, 2014): 887–91. http://dx.doi.org/10.1002/prop.201400027.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Papadimitriou, Ioannis, and Kostas Skenderis. "Correlation Functions in Holographic RG Flows." Journal of High Energy Physics 2004, no. 10 (November 1, 2004): 075. http://dx.doi.org/10.1088/1126-6708/2004/10/075.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Suyama, Takao. "Closed String Tachyons and RG flows." Journal of High Energy Physics 2002, no. 10 (October 22, 2002): 051. http://dx.doi.org/10.1088/1126-6708/2002/10/051.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "RG Flows"

1

Tiedt, Caio Luiz. "RG flows e sistemas dinâmicos." Universidade de São Paulo, 2019. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-18032019-151627/.

Full text
Abstract:
No contexto de Renormalização Wilsoniana, os fluxos do grupo de renormalização (RG flows) são um conjunto de equações diferenciais que define como as constantes de acoplamento de uma teoria dependem de uma escala de energia. o conteúdo destes é semelhante a como sistemas termodinâmicos estão relacionados com a temperatura. Neste sentindo, é natural olhar para estruturas nos fluxos que demonstram um comportamento termodinâmico. A teoria matemática para estudar estas equações é chamada de sistemas dinâmicos e aplicações desta têm sido usadas no estudo de RG flows. Como exemplo o teorema-C de Zamolodchikov e os equivalentes teoremas em dimensões maiores mostram que existe uma função monotonicamente decrescente ao longo do fluxo e é uma propriedade que se assemelha à segunda lei da termodinâmica, estão relacionadas com a função de Lyapunov no contexto de sistemas dinâmicos e podem ser usadas para excluir a possibilidade de comportamentos assintóticos exóticos, como fluxos periódicos ou ciclos limites. Estudamos a teoria de bifurcação e a teoria de índice, que foram propostas como sendo úteis no estudo de RG flows: a primeira pode ser usada para explicar constantes cruzando pela marginalidade e a segunda para extrair informação global do espaço em que os fluxos vivem. Nesta dissertação, também olhamos para aplicações em RG flows holográficos e tentamos buscar relações entre as estruturas em teorias holográficas e as suas duais teorias de campos.
In the context of Wilsonian Renormalization, renormalization group (RG) flows are a set of differential equations that defines how the coupling constants of a theory depend on an energy scale. These equations closely resemble thermodynamical equations and how thermodynamical systems are related to temperature. In this sense, it is natural to look for structures in the flows that show a thermodynamics-like behaviour. The mathematical theory to study these equations is called Dynamical Systems, and applications of that have been used to study RG flows. For example, the classical Zamolodchikov\'s C-Theorem and its higher-dimensional counterparts, that show that there is a monotonically decreasing function along the flow and it is a property that resembles the second-law of thermodynamics, is related to the Lyapunov function in the context of Dynamical Systems. It can be used to rule out exotic asymptotic behaviours like periodic flows (also known as limit cycles). We also study bifurcation theory and index theories, which have been proposed to be useful in the study of RG flows, the former can be used to explain couplings crossing through marginality and the latter to extract global information about the space the flows lives in. In this dissertation, we also look for applications in holographic RG flows and we try to see if the structural behaviours in holographic theories are the same as the ones in the dual field theory side.
APA, Harvard, Vancouver, ISO, and other styles
2

Özakin, Arkadas I. Wise Mark B. "RG-flows, AdS/CFT correspondence and stability of non-dilatonic branes /." Diss., Pasadena, Calif. : California Institute of Technology, 2004. http://resolver.caltech.edu/CaltechETD:etd-04272005-130936.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Ghosh, Jewel Kumar. "Aspects of Holographic Renormalization Group Flows on Curved Manifolds." Thesis, Sorbonne Paris Cité, 2019. http://www.theses.fr/2019USPCC071.

Full text
Abstract:
La correspondance CFT (Anti-De Sitter) (AdS) / Théorie des champs conformes (CFT), également connue sous le nom de dualité holographique, constitue un lien remarquable entre la théorie des cordes (qui inclut la gravité) et les théories de jauge. Elle relie une CFT dans un espace-temps d-dimensionnel à une théorie de la gravité dans un espace-temps dimension supérieur, également appelé bloc. Ce dernier a une limite dans laquelle réside la théorie du champ conforme.Dans cette thèse, le sujet d'étude est la description holographique des flux de groupes de renormalisation (RG) des théories (de champ) sur les espaces-temps à symétrie maximale. Le cadre théorique que j'ai utilisé est la théorie d'Einstein-scalaire. L'inclusion du champ scalaire dynamique correspond à la rupture de l'invariance conforme aux limites. Dans ce travail, les limites et les tranches du bloc sont choisies pour être des espaces-temps à symétrie maximale et l'évolution des champs en bloc est étudiée. Il décrit les écoulements RG holographiques sur des variétés courbes. De plus, deux applications sont présentées dans cette thèse. La première application s'inscrit dans le contexte des théorèmes F et la seconde concerne un défaut incurvé dans les flux RG holographiques en masse.Les théorèmes F pour les théories de champs quantiques (QFT) définies dans des espaces-temps tridimensionnels exigent l'existence de fonctions dites F. Ce sont des fonctions décroissantes de façon monotone le long du flux RG. Dans ce travail, de nouvelles fonctions F pour les théories holographiques ont été découvertes. Elles sont construites à partir de l'action sur la parois d'une solution de flux holographique RG sur une sphère à 3-sphères. Ils permettent une interprétation entropique, fournissant ainsi un lien direct entre la formulation entropique du théorème F et sa définition en termes d’énergie libre.La deuxième application des flux RG holographiques explorée dans cette thèse se situe dans le contexte de modèles affichant un mécanisme d'auto-ajustement en tant que résolution proposée du problème de la constante cosmologique (CC). Dans ces modèles, notre univers à 4-dimensions est réalisé comme une brane intégrée dans un volume à 5-dimensions. Ce cadre permet des solutions où la géométrie de la brane est plate malgré la présence d'une énergie de vide non triviale sur son worldvolume. Ceci est appelé réglage automatique. De chaque côté de la brane, les solutions sont des flux RG holographiques. Le nouvel aspect introduit dans cette thèse consiste à utiliser les flux RG holographiques sur des variétés courbes, ce qui permet à son tour d’étudier des solutions à réglage automatique dans lesquelles la brane est également courbe
The Anti-de Sitter (AdS)/Conformal Field Theory (CFT) correspondence, also known as holographic duality, is a remarkable connection between string theory (which includes gravity) and gauge theories. It relates a CFT in a d-dimensional space-time to a gravity theory in higher dimensional space-time which is also referred to as the bulk. The latter has a boundary on which the conformal eld theory may be thought to reside. In this thesis, the subject of study is the holographic description of Renormalization Group (RG) fows of (field) theories on maximally symmetric space-times. The theoretical framework I used is Einstein-scalar theory. Inclusion of the dynamical scalar field corresponds to breaking boundary conformal invariance. In this work, both the boundary and bulk slices are chosen to be maximally symmetric space-times and the evolution of bulk fields is studied. It describes holographic RG flows on curved manifolds. Furthermore, two applications are presented in this thesis. The first application is in the context of F-theorems and the second is regarding a curved defect in the bulk holographic RG flows.F-theorems for Quantum Field Theories (QFT) defined on 3-dimensional space-times demand the existence of so-called F-functions. These are monotonically decreasing functions along the RG flow. In this work, new F-functions for holographic theories have been found which are constructed from the on-shell action of a holographic RG flow solution on a 3-sphere. They allow an entropic interpretation, therefore providing a direct connection between the entropic formulation of the F-theorem and its definition in terms of free energy. The second application of holographic RG flows explored in this thesis is in the context of models displaying a self-tuning mechanism as a proposed resolution of the cosmological constant (CC) problem. In these models, our 4-dimensional universe is realized as a brane embedded in a 5-dimensional bulk. This framework allows solutions where the brane geometry is flat despite of the presence of non-trivial vacuum energy on its worldvolume. This is referred to as self-tuning. On each side of the brane, the solutions are holographic RG flows. The new aspect introduced in this thesis is to use the holographic RG flows on curved manifolds, which in turn allows the study of self-tuning solutions where the brane is also curved
APA, Harvard, Vancouver, ISO, and other styles
4

Vaduret, Jean-François. "GPPZ and the Holographic Triforce against Scalars." Thesis, Uppsala universitet, Teoretisk fysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-397107.

Full text
Abstract:
We use gauge-invariant cosmological perturbation theory to compute one-point functions of active and inert scalar fields of the GPPZ RG-flow in AdS5. Linearized Einstein equations are computed and made gauge-invariant for D-dimensional Euclidean domain-wall geometry. We briefly review the procedure of holographic renormalization for the GPPZ RG-flow in AdS5 to get different one-point functions. The source-dependant vev of the operator dual to the ∆ = 3 active scalar field in the GPPZ solution is computed and agrees with literature. We also find the source-dependant one-point function of the operator dual to the ∆ = 3 inert scalar.
APA, Harvard, Vancouver, ISO, and other styles
5

Singh, Ajay. "Holographic Entanglement Entropy: RG Flows and Singular Surfaces." Thesis, 2012. http://hdl.handle.net/10012/6871.

Full text
Abstract:
Over the past decade, the AdS/CFT correspondence has proven to be a remarkable tool to study various properties of strongly coupled field theories. In the context of the holography, Ryu and Takayanagi have proposed an elegant method to calculate entanglement entropy for these field theories. In this thesis, we use this holographic entanglement entropy to study a candidate c-theorem and entanglement entropy for singular surfaces. We use holographic entanglement entropy for strip geometry and construct a candidate c-function in arbitrary dimensions. For holographic theories dual to Einstein gravity, this c-function is shown to decrease monotonically along RG flows. A sufficient condition required for this monotonic flow is that the stress tensor of the matter fields driving the holographic RG flow must satisfy the null energy condition over the holographic surface used to calculate the entanglement entropy. In the case where the bulk theory is described by Gauss-Bonnet gravity, the latter condition alone is not sufficient to establish the monotonic flow of the c-function. We also observe that for certain holographic RG flows, the entanglement entropy undergoes a ‘phase transition’ as the size of the system grows and as a result, evolution of the c-function may exhibit a discontinuous drop. Then, we turn towards studying the holographic entanglement entropy for regions with a singular boundary in higher dimensions. Here, we find that various singularities make new universal contributions. When the boundary CFT has an even spacetime dimension, we find that the entanglement entropy of a conical surface contains a term quadratic in the logarithm of the UV cut-off. In four dimensions, the coefficient of this contribution is proportional to the central charge c. A conical singularity in an odd number of spacetime dimensions contributes a term proportional to the logarithm of the UV cut-off. We also study the entanglement entropy for various boundary surfaces with extended singularities. In these cases, extended singularities contribute through new linear or quadratic terms in logarithm only when the locus of the singularity is even dimensional and curved.
APA, Harvard, Vancouver, ISO, and other styles
6

Ozakin, Arkadas Inan. "RG-Flows, AdS/CFT Correspondence and Stability of Non-Dilatonic Branes." Thesis, 2004. https://thesis.library.caltech.edu/1519/1/Ozakin_ai_2004.pdf.

Full text
Abstract:
The possibility of having multiple renormalization group (RG) flows (one of which is supersymmetric) between two fixed points is investigated in the context of anti de Sitter / conformal field theory (AdS/CFT) correspondence. An analysis of a toy-model potential suggests that such flows are likely to exist. Superpotential methods are used in the context of finite temperature AdS/CFT to derive a black brane solution which approximates various finite temperature RG-flows in AdS/CFT near the horizon. This solution is also used in formulating a notion of univerality classes of instabilities of black braves. Instabilities of D3, M2 and M5-branes are investigated numerically, and the results confirm the predictions of the proposal of universality classes.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "RG Flows"

1

Institute for Computer Applications in Science and Engineering., ed. Renormalization Group (RG) in turbulence: Historical and comparative perspective. Hampton, VA: Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "RG Flows"

1

Baggioli, Matteo. "The Geometrization Process and Holographic RG Flows." In SpringerBriefs in Physics, 93–105. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-35184-7_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Mukhopadhyay, Ayan. "Emergence of Gravity and RG Flow." In Gravity and the Quantum, 283–302. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51700-1_17.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

"Boundary RG flows of 𝒩=2 minimal models." In Mirror Symmetry V, 381–404. Providence, Rhode Island: American Mathematical Society, 2006. http://dx.doi.org/10.1090/amsip/038/17.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

BIANCHI, MASSIMO, and JOSE F. MORALES. "ANOMALIES, RG-FLOWS AND OPEN/CLOSED STRING DUALITY." In The Ninth Marcel Grossmann Meeting, 1121–26. World Scientific Publishing Company, 2002. http://dx.doi.org/10.1142/9789812777386_0179.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

"Gravitationally dressed RG flows, zigzag symmetry and zero-tension strings." In Trends in Mathematical Physics, 345–51. Providence, Rhode Island: American Mathematical Society, 1999. http://dx.doi.org/10.1090/amsip/013/24.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Zinn-Justin, Jean. "The Higgs boson: A major discovery and a problem." In From Random Walks to Random Matrices, 195–208. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198787754.003.0012.

Full text
Abstract:
Chapter 12 describes the main steps in the construction of the electroweak component of the Standard Model of particle physics. The classical Abelian Landau–Ginzburg–Higgs mechanism is recalled, first introduced in the macroscopic description of a superconductor in a magnetic field. It is based on a combination of spontaneous symmetry breaking and gauge invariance. It can be generalized to non–Abelian gauge theories, quantized and renormalized. The recent discovery of the predicted Higgs boson has been the last confirmation of the validity of the model. Some aspects of the Higgs model and its renormalization group (RG) properties are illustrated by simplified models, a self–interacting Higgs model with the triviality issue, and the Gross–Neveu–Yukawa model with discrete chiral symmetry, which illustrates spontaneous fermion mass generation and possible RG flows.
APA, Harvard, Vancouver, ISO, and other styles
7

Lukyanov, Sergei L., and Alexander B. Zamolodchikov. "Integrability in 2D fields theory/sigma-models." In Integrability: From Statistical Systems to Gauge Theory, 248–318. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198828150.003.0006.

Full text
Abstract:
This is a two-part course about the integrability of two-dimensional non-linear sigma models (2D NLSM). In the first part general aspects of classical integrability are discussed, based on the O(3) and O(4) sigma-models and the field theories related to them. The second part is devoted to the quantum 2D NLSM. Among the topics considered are: basic facts of conformal field theory, zero-curvature representations, integrals of motion, one-loop renormalizability of 2D NLSM, integrable structures in the so-called cigar and sausage models, and their RG flows. The text contains a large number of exercises of varying levels of difficulty.
APA, Harvard, Vancouver, ISO, and other styles
8

Mussardo, Giuseppe. "In the Vicinity of the Critical Points." In Statistical Field Theory, 545–74. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198788102.003.0015.

Full text
Abstract:
Chapter 15 introduces the notion of the scaling region near the critical points, identified by the deformations of the critical action by means of the relevant operators. The renormalization group flows that originate from these deformations are subjected to important constraints, which can be expressed in terms of sum-rules. This chapter also discusses the nature of the perturbative series based on the conformal theories. Further, it describes how the analysis of the off-critical theories poses a series of interesting questions, and also covers ultraviolet divergences, structure constants, the two-point function of the Yang–Lee model, the RG and β‎-functions and the c-theorem.
APA, Harvard, Vancouver, ISO, and other styles
9

Zinn-Justin, Jean. "Stability of renormalization group fixed points and decay of correlations." In From Random Walks to Random Matrices, 101–10. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198787754.003.0007.

Full text
Abstract:
Chapter 7 is devoted to a discussion of the renormalization group (RG) flow when the effective field theory that describes universal properties of critical phenomena depends on several coupling constants. The universal properties of a large class of macroscopic phase transitions with short range interactions can be described by statistical field theories involving scalar fields with quartic interactions. The simplest critical systems have an O(N) orthogonal symmetry and, therefore, the corresponding field theory has only one quartic interaction. However, in more general physical systems, the flow of quartic interactions is more complicated. This chapter examines these systems from the RG viewpoint. RG beta functions are shown to generate a gradient flow. Some examples illustrate the notion of emergent symmetry. The local stability of fixed points is related to the value of the scaling field dimension.
APA, Harvard, Vancouver, ISO, and other styles
10

"Lecture 14. Renormalization Group; RG Flow." In Quantum Field Theory II, 141–54. WORLD SCIENTIFIC, 2019. http://dx.doi.org/10.1142/9789813234192_0014.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "RG Flows"

1

Gava, Edi. "RG flows and instantons." In THE SIXTH INTERNATIONAL SCHOOL ON FIELD THEORY AND GRAVITATION-2012. AIP, 2012. http://dx.doi.org/10.1063/1.4756967.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Del Debbio, Luigi, and Liam Keegan. "RG flows in 3D scalar field theory." In XXIX International Symposium on Lattice Field Theory. Trieste, Italy: Sissa Medialab, 2012. http://dx.doi.org/10.22323/1.139.0061.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Denbleyker, Alan, Alexei Bazavov, Daping Du, Yuzhi Liu, Yannick Meurice, and Haiyuan Zou. "Fisher's zeros, complex RG flows and confinement in LGT models." In XXIX International Symposium on Lattice Field Theory. Trieste, Italy: Sissa Medialab, 2012. http://dx.doi.org/10.22323/1.139.0299.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Liu, Yuzhi, Zechariah Gelzer, Yannick Meurice, and Donald k. Sinclair. "Fisher's zeros for SU(3) with Nf flavors and RG flows." In 31st International Symposium on Lattice Field Theory LATTICE 2013. Trieste, Italy: Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.187.0078.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Meurice, Yannick. "Fisher's zeros as boundary of RG flows in complex coupling space." In The XXVIII International Symposium on Lattice Field Theory. Trieste, Italy: Sissa Medialab, 2011. http://dx.doi.org/10.22323/1.105.0259.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Irges, Nikos. "Towards the effective action of Non-Perturbative Gauge-Higgs Unification (or on RG flows near quantum phase transitions)." In Corfu Summer Institute 2017 "Schools and Workshops on Elementary Particle Physics and Gravity". Trieste, Italy: Sissa Medialab, 2018. http://dx.doi.org/10.22323/1.318.0080.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Rioua, X., J. Fabrea, and C. Colin. "Closure Laws for the Transport Equation of Interfacial Area in Dispersed Flow." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31386.

Full text
Abstract:
Derivation of a transport equation for the interfacial area concentration. In two-phase flows, the interfacial area is a key parameter since it mainly controls the momentum heat and mass transfers between the phases. An equation of transport of interfacial area may be very useful, especially for the two-fluid models. Such an equation should be able to predict the transition between the flow regimes. With this aim in view, we shall focus our attention on pipe flow. Besides in a first step, our study will be limited to dispersed flows. Different models are used to predict the evolution of bubble sizes. Some models use a population balance that provides a detailed description of the bubble size distributions, but they require as many equations as diameter ranges (Coulaloglou & Tavlarides1). Some others use only one equation for the transport of the mean interfacial area (Hibiki & Ishii2). In that case the bubble size distribution is treated as it would be monodispersed, its mean diameter being equal to the Sauter diameter. An intermediate approach was proposed by Kamp et al.3, in which polydispersed size distributions can be taken into account. It is the starting point of the present study in which: • The choice of an interfacial velocity is discussed. • The sink and source terms due to bubble coalescence, break-up or phase change are established. The model of Kamp et al. consists of transport equations of the various moments of the density probability function P(d) of the bubble diameter. In many experimental situations, P(d) is well predicted by a log-normal law (with two characteristic parameters d00 the central diameter of the distribution and a width parameter): The different moments of order ? of P(d) may be calculated: Sγ=n∫P(d)dγd(d)(1) where n is the bubble number density, S1/n, the mean diameter and S2/?, the interfacial area. A transport equation can be written for each moment: ∂Sγ∂t+∇·(uGSγ)=φγ(2) The lhs of (2) is an advection term by the gas velocity uG and the rhs is a source or sink term due to bubble coalescence, break-up or mass transfer. Since the bubble size distribution is characterised by the two parameters d00 and σˆ, only two transport equations (for S1 and S2) have to be solved to calculate the space-time evolution of the bubble size distribution. These two equations are still too cumbersome for a two-fluid model. Under some hypotheses (σˆ ∼ constant), they are lead to a single equation for the interfacial area. In its dimensionless form the interfacial area ai+ (ai+ = π S2 D, where D is the pipe diameter) reads: d/dt+(ai+)=f(RG,Re,We,ai+)(3) where RG is the gas fraction, Re is the Reynolds number of the mixture, We the Weber number of the mixture and t+ a dimensionless time.
APA, Harvard, Vancouver, ISO, and other styles
8

Chan, Sang Lung. "Assessment of MELCOR 1.8.5 Versus Different Versions of SCDAP/RELAP5 MOD 3.3 With Lower Head Creep Rupture Analysis of Alternative Accident Sequences of the Three Mile Island Unit 2." In 12th International Conference on Nuclear Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/icone12-49032.

Full text
Abstract:
The objective of this analysis is to assess MELCOR 1.8.5-RG against SCDAP/RELAP5 MOD 3.3kz (SR5m33kz), and SCDAP/RELAP5 MOD 3.3bf (SR5m33bf). This lower head creep rupture analysis considers: (1) Three Mile Island Unit 2 (TMI-2) alternative accident sequence-1, and (2) TMI-2 alternative accident sequence-2. SCDAP/RELAP5 model of TMI-2 alternative accident sequence-1 includes the continuation of the base case of the TMI-2 accident with the reactor coolant pumps (RCP) tripped, and the High Pressure Injection System (HPIS) throttled after approximately 6000 s accident time, SCDAP/RELAP5 model of TMI-2 alternative accident sequence-2 is derived from the TMI-2 base case accident by tripping the RCP after 6000 s, and the HPIS is reactivated after 12,012 s. MELCOR model of TMI-2 alternative accident sequence-1 is based on MELCOR TMI-2 phase-2 model by tripping the RCP and throttling back the makeup flows to zero from 6000 s onward. In MELCOR model of TMI-2 alternative accident sequence-2, the RCP are tripped from 6000 s and the constant makeup flow rate of 3.75 kg/s — including pump seal flow rate, but without HPIS flow rate — is activated from 6000 s and beyond 10440 s. The simulation is run until the lower head wall ruptures. In addition, the lower head penetration failure is also calculated with MELCOR for both TMI-2 alternative accident sequences. Lower head temperature contours calculated with SCDAP/RELAP5 are visualized and animated with open source visualization freeware ‘OpenDX’. Significant findings of the analysis include: (1) the TMI-2 lower head wall fails by creep rupture with either deactivations or activations of the HPIS; (2) for the TMI-2 alternative accident sequence-1 the time to creep rupture calculated with MELCOR 1.8.5-RG, SR5m33kz, and SR5m33bf agrees reasonably; (3) the calculation with MELCOR for the TMI-2 alternative accident sequence-1 predicts that the lower head wall failure occurred earlier than penetration failure, while MELCOR predicts the opposite for the TMI-2 alternative accident sequence-2; (4) calculation with MELCOR for TMI-2 alternative accident sequence-2 shows that when the lower head wall fails the temperature calculated with MELCOR is 1810.9 K, which exceeds the melting temperature of 1789 K for carbon steel; (5) calculations with both SR5m33kz and SR5m33bf for both TMI-2 alternative accident sequences indicate that different lower head wall locations fail rapidly one after another by a delay of a few seconds, while this is not the case for MELCOR.
APA, Harvard, Vancouver, ISO, and other styles
9

Vacca, Gian Paolo. "Pomeron-Odderon interactions: A functional RG flow analysis." In DIFFRACTION 2016: International Workshop on Diffraction in High-Energy Physics. Author(s), 2017. http://dx.doi.org/10.1063/1.4977160.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Bonanno, Alfio. "Proper-time regulators and RG flow in QEG." In GENERAL RELATIVITY AND GRAVITATIONAL PHYSICS: 16th SIGRAV Conference on General Relativity and Gravitational Physics. AIP, 2005. http://dx.doi.org/10.1063/1.1891541.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "RG Flows"

1

Kachru, Shamit, Jason Kumar, and Eva Silverstein. Orientifolds, RG flows, and closed string tachyons. Office of Scientific and Technical Information (OSTI), July 1999. http://dx.doi.org/10.2172/840213.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Kachru, S. Orientifolds, RG Flows, and Closed String Tachyons. Office of Scientific and Technical Information (OSTI), July 1999. http://dx.doi.org/10.2172/10108.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Torroba, Gonzalo. Unitarity Bounds and RG Flows in Time Dependent Quantum Field Theory. Office of Scientific and Technical Information (OSTI), April 2012. http://dx.doi.org/10.2172/1037997.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'RG Flows' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography