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Autor: Grafiati

Data publikacji: 30 listopada 2024

Data aktualizacji: 31 lipca 2025

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1

BORGHINI, NICOLAS. "Sur certaines implications cosmologiques de la transition de phase quark-hadron." Paris 6, 1999. http://www.theses.fr/1999PA066069.

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Nous etudions, dans le cadre d'un modele effectif de physique des particules couramment utilise en physique hadronique a basse energie, la transition de phase prevue par la chromodynamique quantique entre la phase hadronique et le plasma de quarks et de gluons. Dans le contexte cosmologique de l'univers primordial, nous trouvons qu'a l'issue de la transition lors de laquelle les quarks, initialement libres, ont ete confines a l'interieur des hadrons, des vestiges de la phase initiale avec un contenu en particules de l'ordre de celui du soleil - les etoiles a quarks - se sont formes. De plus, l

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2

Faure, Rémi. "Neutrinos, cosmological phase transitions and the matter-antimatter asymmetry of the Universe." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP081.

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L'asymétrie entre matière et antimatière est un problème non résolu de la cosmologie. Une approche populaire pour l'expliquer est la leptogénèse avec des neutrinos stériles, qui sont des particules motivées expérimentalement pour expliquer les masses des neutrinos actifs du Modèle Standard. Il est possible d'inclure dans les scénarios de leptogénèse une transition de phase cosmologique qui donne leur masse aux neutrinos stériles. Cette idée est intéressante phénoménologiquement, car une transition de phase produit des ondes gravitationnelles pouvant être détectées. À la température de la trans

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3

Florakis, Ioannis. "Théorie des Cordes et Applications Phénoménologiques et Cosmologiques." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00607408.

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Cette thèse traite des applications de la Théorie des Cordes aux problèmes de la cosmologie et de la phénoménologie. En particulier, nous étudions des problèmes liés à la description de l'état initial de l'Univers, en utilisant les méthodes perturbatives de la Théorie des Cordes. Après une présentation des outils nécessaires, nous présentons une nouvelle symétrie de dégénérescence spectrale entre les états massifs bosoniques et fermioniques (appelée symétrie MSDS), se trouvant aux points particuliers de l'espace des modules. Nous étudions les déformations marginales des vides MSDS et mettons e

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4

Werner, Philipp. "Dissipative quantum phase transitions /." Zürich, 2005. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16134.

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5

Palmer, David Cristopher. "Phase transitions in leucite." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357876.

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6

Fliegans, Olivier. "Phase transitions in "small" systems." [S.l. : s.n.], 2001. http://www.diss.fu-berlin.de/2001/93/index.html.

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7

Rowley, Stephen Edward. "Quantum phase transitions in ferroelectrics." Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/252224.

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8

Oukouiss, Abdelkarim. "Phase transitions in ferromagnetic fluids." Doctoral thesis, Universite Libre de Bruxelles, 1999. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211920.

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9

Casson, Brian Derek. "Phase transitions in surfactant monolayers." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300797.

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10

Fairhurst, David John. "Polydispersity in colloidal phase transitions." Thesis, University of Edinburgh, 1999. http://hdl.handle.net/1842/1496.

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I have studied the effects of polydispersity on the phase behaviour of suspensions of PMMA colloidal spheres on their own and in the presence of non-adsorbed polymer. I systematically explored the volume fraction-polydispersity phase behaviour of hard spheres (with radii R =167, 244, 300 and 303nm) through direct observations and crystallography measurements. I observed normal crystallisation for sigma < 7:5%, and no crystals at sigma > 18%. Samples at sigma ~~ 9.5% showed crystal-fluid coexistence between 0:52 < phi < 0:56 but no fully crystalline be- haviour above this region. This may be ex

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11

Delivorias, Nikitas Alex. "Cosmic structure from phase transitions." Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4702/.

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Motivated by recent observations suggesting that structures in the Universe appear to be concentrated on the walls of bubbles that surround giant voids, we examine the possibility that the observed structure may have resulted from a first order phase transition that occured after inflation and which proceeded by quantum tunnelling and the formation of bubbles of true vacuum. Since we lack a fundamental theory of particle physics that would define the scalar field responsible for the second phase change and predict the scale of the resulting structures, we instead examine two similar parametris

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12

Stow, Simon John. "Phase transitions in relativistic systems." Thesis, Royal Holloway, University of London, 1985. http://repository.royalholloway.ac.uk/items/e6332754-d6f0-4d29-8960-dc05a5ca3390/1/.

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The BCS free energy for <sup>3</sup>P<sub>2</sub> paired neutron matter is derived taking account of relativistic effects. It is found that the values taken by the Ginzburg-Landau parameters are always in the region of the phase diagram correponding to a unitary phase. Phase transitions in the early universe are also discussed with inclusion of the effects of Higgs scalar chemical potentials as well as fermionic chemical potentials. The conditions for equilibrium, and the critical density to prevent symmetry restoration at high temperatures are studied. It is observed that the decay of pre-exi

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13

Fedorenko, T. O. "First-order magnetic phase transitions." Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/34842.

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After the general properties of the first-order magnetic phase transitions between ordered structures were investigated, the number of possible models has been limited by supposing the sensitivity of the exchange energy to the interatomic distance to be responsible for the phase transition. It has shown that the magnetic phase transition occurs as a result of a sign-change in the proper combination of the exchange parameters. The transition may be influenced by the variation of the pressure and the magnetic field. The actual phase transition is, however, hindered in both directions by the elas

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14

Littlewort, G. C. "Phase transitions in neural networks." Master's thesis, University of Cape Town, 1986. http://hdl.handle.net/11427/7617.

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The behaviour of computer simulations of networks of neuron-like binary decision elements is studied. The models are discrete in time and deterministic , but the sequence of states of neurons in a net is not generally reversible in time because of the threshold nature of neurons. Self-organisation, or activity-dependent modification of interneuronal connection strengths, is used. Cyclic modes of activity which emerge spontaneously, underlie possible mechanisms of short term memory and associative thinking. The transition from seemingly random activity patterns to cyclic activity is examined in

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15

Ouali, Taoufik. "Méthode cosmologique pour la détermination de la masse de Higgs." Montpellier 2, 1990. http://www.theses.fr/1990MON20046.

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Dans le but de connaitre l'effet de la phase electro-faible sur la forme d'expansion de l'univers, on utilise une methode cosmologique qui consiste a suivre les differentes etapes de son evolution. Cette methode permet d'avoir une estimation sur la valeur de la masse de higgs et sur l'instant du commencement de la phase electro-faible

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16

Xu, Hui. "Phase structure and phase transitions in semicrystalline isotactic polystyrene /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2005.

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Thesis (Ph.D.)--Tufts University, 2005.<br>Adviser: Peggy Cebe. Submitted to the Dept. of Physics. Includes bibliographical references. Access restricted to members of the Tufts University community. Also available via the World Wide Web;

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17

Monceau, Pascal. "TRANSITIONS DE PHASE EN DIMENSIONS FRACTALES." Habilitation à diriger des recherches, Université Paris-Diderot - Paris VII, 2004. http://tel.archives-ouvertes.fr/tel-00521313.

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Parmi les méthodes de la théorie du groupe de renormalisation, les développements en epsilon sont basés sur des calculs dans l'espace réciproque et permettent de calculer les exposants critiques associés aux transitions magnétiques du second ordre pour des valeurs non entières de la dimension d'espace. Une interprétation physique naturelle consiste à se demander comment se comporte un système de spins en interaction dans un espace de dimension fractale. Or les structures fractales sont construites par itération d'une cellule génératrice dont les détails sont donc présents à plusieurs échelles

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18

Madamba, Maria Cecilia S. "Phase transitions in superionic PbSnF¦4." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ39072.pdf.

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19

Chen, Leiming. "Tilt phase transitions in disordered systems /." view abstract or download file of text, 2006. http://proquest.umi.com/pqdweb?did=1251884301&sid=1&Fmt=2&clientId=11238&RQT=309&VName=PQD.

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Thesis (Ph. D.)--University of Oregon, 2006.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 126-128). Also available for download via the World Wide Web; free to University of Oregon users.

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20

Jones, Nicholaos John. "Ineliminable idealizations, phase transitions, and irreversibility." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1163026373.

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21

Lidmar, Jack. "Phase transitions in high-temperature superconductors." Doctoral thesis, Stockholm : Tekniska högsk, 1998. http://www.lib.kth.se/abs99/lidm0111.pdf.

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22

Li, Su. "Phase transitions of high temperature superconductors." College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/7276.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.<br>Thesis research directed by: Physics. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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23

Nikas, Yvonne Jiang. "Topics in phase transitions at interfaces." Connect to resource, 1989. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1232732921.

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24

Giddy, Andrew Peter. "Computational studies of structural phase transitions." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239582.

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25

De, Dombal Richard Francis. "Phase transitions in nepheline and tridymite." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239792.

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26

Ferreira, Pedro Tonnies Gil. "Observational consequences of cosmological phase transitions." Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338692.

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27

Karra, Glykeria. "Production of defects at phase transitions." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298337.

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28

Larsson, Sebastian E. "Topological defects from cosmological phase transitions." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298309.

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29

Adams, Jennifer Anne. "Cosmological phase transitions : techniques and phenomenology." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306935.

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30

Swift, Michael Robert. "Surface phase transitions in novel geometries." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279938.

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31

Hook, Daniel William. "Phase transitions in quantum microcanonical equilibrium." Thesis, Imperial College London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497906.

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32

Meier, Hannes. "Superfluid Phase Transitions in Disordered Systems." Licentiate thesis, KTH, Statistisk fysik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-50051.

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This thesis presents results from large scale Monte Carlo simulations of systems subject to a superfluid phase transition in the presence of disorder. The simulations are performed by state-of-the-art, collective Monte Carlo algorithms treating phase degrees of freedom in effective models with amplitude fluctuations integrated out. In Paper I a model system for the possible solid to supersolid transition in 4He is presented.The Wolff cluster algorithm is used to study how the presence of linearly correlated random defects is able to alter the universality class of the 3-dimensional XY-model. I

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33

Zarikas, Vasilios. "Aspects of early universe phase transitions." Thesis, University of Newcastle Upon Tyne, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318257.

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34

Braun, Frank Nicholas. "Surface phase transitions in liquid crystals." Thesis, University of Southampton, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242564.

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35

Gelb, Lev. "Theoretical studies of surface phase transitions." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387600.

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36

Gambhir, Manoj. "Models of phase transitions in silicates." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624645.

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37

Spalek, Leszek Jedrzej. "Emergent phenomena near selected phase transitions." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608135.

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38

Diener, Jacobus Petrus Willem. "Ferromagnetic phase transitions in neutron stars." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71982.

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Thesis (PhD)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: We consider the ferromagnetic phase in pure neutron matter as well as charge neutral, betaequilibrated nuclear matter. We employ Quantum Hadrodynamics, a relativistic field theory description of nuclear matter with meson degrees of freedom, and include couplings between the baryon (proton and neutron) magnetic dipole moment as well as between their charge and the magnetic field in the Lagrangian density describing such a system. We vary the strength of the baryon magnetic dipole moment till a non-zero value of the magnetic

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39

Saunders, Timothy E. "Phase transitions in geometrically frustrated antiferromagnets." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.670121.

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40

Magou, Maria. "Holographic descriptions of chiral phase transitions." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/345723/.

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Quantum Chromodynamics (QCD) poses a challenge in calculating physical phenomena in low energy scales due to its strongly coupled character. The tools available for understanding this region of QCD are limited. One such tool is gauge/gravity duality which promises to attack strongly coupled related phenomena, at least in a qualitative level, by using the conjectured equivalence between string theory and some classes of quantum field theories (gauge/gravity duality). In this thesis strongly coupled 3+1d and 2+1d field theories are explored by using D3/D7 and D3/D5 brane systems respectively. Th

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41

Lusk, Mark T. Knowles James K. "Martensitic phase transitions with surface effects /." Diss., Pasadena, Calif. : California Institute of Technology, 1992. http://resolver.caltech.edu/CaltechETD:etd-11052004-161432.

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42

Cuvelier, Pierre. "Transitions de phase des cristaux plastiques." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb375969616.

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43

Bailey, Delbert D. "Phase transitions of boolean satisfiability variants /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2004. http://uclibs.org/PID/11984.

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44

Cortés, Huerto Robinson. "Phase transitions in many-electron systems." Thesis, Queen's University Belfast, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527673.

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45

Rizzi, Matteo. "Quantum Phase transitions in Hubbard lattices." Doctoral thesis, Scuola Normale Superiore, 2007. http://hdl.handle.net/11384/85848.

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46

Orús, Lacort Román. "Entanglement, quantum phase transitions and quantum algorithms." Doctoral thesis, Universitat de Barcelona, 2006. http://hdl.handle.net/10803/482202.

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From the seminal ideas of Feynman and until now, quantum information and computation has been a rapidly evolving field. While at the beginning, physicists looked at quantum mechanics as a theoretical framework to describe the fundamental processes that take place in Nature, it was during the 80’s and 90’s that people began to think about the intrinsic quantum behavior of our world as a tool to eventually develop powerful information technologies. As Landauer pointed out, information is physical, so it should not look strange to try to bring together quantum mechanics and information theory. I

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47

Jia, Zhihong. "Structural modulation and phase transitions in melilites." [S.l.] : [s.n.], 2005. http://archiv.ub.uni-marburg.de/diss/z2005/0066/.

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48

Knapek, Christina. "Phase Transitions in Two-Dimensional Complex Plasmas." Diss., lmu, 2010. http://nbn-resolving.de/urn:nbn:de:bvb:19-123271.

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49

Chen, Tielian. "Detection of phase transitions with acoustic resonance." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0020/MQ49673.pdf.

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50

Hines, Andrew Peter. "Entanglement, dynamical bifurcations and quantum phase transitions /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19792.pdf.

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