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Journal articles on the topic 'Non-zero Gravitino Mass'

Author: Grafiati

Published: 7 September 2023

Last updated: 31 July 2025

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1

Marochnik, L. S., та D. A. Usikov. "Dark Energy from Virtual Gravitons (GCDM Model vs. ΛCDM Model)". Universe 8, № 9 (2022): 464. http://dx.doi.org/10.3390/universe8090464.

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The dark energy from virtual gravitons is consistent with observational data on supernovas with the same accuracy as the ΛCDM model. The fact that virtual gravitons are capable of producing a de Sitter accelerated expansion of the FLRW universe was established in 2008 (see references). The combination of conformal non-invariance with zero rest mass of gravitons (unique properties of the gravitational field) leads to the appearance of graviton dark energy in a mater-dominated era; this fact explains the relatively recent appearance of the dark energy and answers the question “Why now?”. The tra

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2

Hradyskyi, A. V., and Yu P. Stepanoskiy. "The Massless Limit of Bargmann–Wigner Equations for a Massive Graviton." Ukrainian Journal of Physics 63, no. 7 (2018): 584. http://dx.doi.org/10.15407/ujpe63.7.584.

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Information about the discovery of gravity waves attract attention to the graviton’s mass problem. The massive graviton is a spin-2 particle with a non-zero mass. In this work, relativistic wave equations for a massive graviton have been studied in the limiting case of zero particle mass. The equations for the non-zero-mass graviton are based on the Bargman–Wigner equations in the five-dimensional space-time with the (++++−) signature. In the massless limit of massive graviton, all states with possible helicity values –0 (LL-graviton), ±1 (TL-graviton), and ±2 (TT-graviton) –are preserved.

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Piórkowska-Kurpas, Aleksandra. "Graviton Mass in the Era of Multi-Messenger Astronomy." Universe 8, no. 2 (2022): 83. http://dx.doi.org/10.3390/universe8020083.

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The idea of massive graviton plays a fundamental role in modern physics as a landmark of most scenarios related to modified gravity theories. Limits on graviton mass can be obtained through different methods, using all the capabilities of multi-messenger astronomy available today. In this paper, we consider some emerging opportunities. In particular, modified relativistic dispersion relations of massive gravitons may lead to changes in the travel time of gravitational waves (GWs) emitted from distant astrophysical objects. Strong gravitational lensing of signals from a carefully selected class

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Nair, S., A. Vijaykumar, and S. Sarkar. "Bounds on the charge of the graviton using gravitational wave observations." Journal of Cosmology and Astroparticle Physics 2024, no. 11 (2024): 004. http://dx.doi.org/10.1088/1475-7516/2024/11/004.

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Abstract If the graviton possesses a non-zero charge qg , gravitational waves (GW) originating from astrophysical sources would experience an additional time delay due to intergalactic magnetic fields. This would result in a modification of the phase evolution of the observed GW signal similar to the effect induced by a massive graviton. As a result, we can reinterpret the most recent upper limits on the graviton's mass as constraints on the joint mass-charge parameter space, finding |qg |/e < 3 × 10-34 where e represents the charge of an electron. Additionally, we illustrate that a charged

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De Felice, Antonio, Shinji Mukohyama, and Masroor C. Pookkillath. "Minimal theory of massive gravity and constraints on the graviton mass." Journal of Cosmology and Astroparticle Physics 2021, no. 12 (2021): 011. http://dx.doi.org/10.1088/1475-7516/2021/12/011.

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Abstract The Minimal theory of Massive Gravity (MTMG) is endowed non-linearly with only two tensor modes in the gravity sector which acquire a non-zero mass. On a homogeneous and isotropic background the theory is known to possess two branches: the self-accelerating branch with a phenomenology in cosmology which, except for the mass of the tensor modes, exactly matches the one of ΛCDM; and the normal branch which instead shows deviation from General Relativity in terms of both background and linear perturbations dynamics. For the latter branch we study using several early and late times data s

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6

ODA, ICHIRO. "HIGGS MECHANISM FOR GRAVITONS." Modern Physics Letters A 25, no. 28 (2010): 2411–21. http://dx.doi.org/10.1142/s0217732310033724.

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Just like the vector gauge bosons in the gauge theories, it is now known that gravitons acquire mass in the process of spontaneous symmetry breaking of diffeomorphisms through the condensation of scalar fields. The point is that we should find the gravitational Higgs mechanism such that it results in massive gravity in a flat Minkowski spacetime without non-unitary propagating modes. This is usually achieved by including higher-derivative terms in scalars and tuning the cosmological constant to be a negative value in a proper way. Recently, a similar but different gravitational Higgs mechanism

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7

Felice, Antonio De, Suresh Kumar, Shinji Mukohyama, and Rafael C. Nunes. "Observational bounds on extended minimal theories of massive gravity: new limits on the graviton mass." Journal of Cosmology and Astroparticle Physics 2024, no. 04 (2024): 013. http://dx.doi.org/10.1088/1475-7516/2024/04/013.

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Abstract In this work, we derive for the first time observational constraints on the extended Minimal Theory of Massive Gravity (eMTMG) framework in light of Planck-CMB data, geometrical measurements from Baryon Acoustic Oscillation (BAO), Type Ia supernovae from the recent Pantheon+ samples, and also using the auto and cross-correlations cosmic shear measurements from KIDS-1000 survey. Given the great freedom of dynamics choice for the theory, we consider an observationally motivated subclass in which the background evolution of the Universe goes through a transition from a (positive or negat

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8

Aerts, C., K. Augustson, S. Mathis, et al. "Rossby numbers and stiffness values inferred from gravity-mode asteroseismology of rotating F- and B-type dwarfs." Astronomy & Astrophysics 656 (December 2021): A121. http://dx.doi.org/10.1051/0004-6361/202142151.

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Context. Multi-dimensional (magneto-)hydrodynamical simulations of physical processes in stellar interiors depend on a multitude of uncalibrated free parameters, which set the spatial and time scales of their computations. Aims. We aim to provide an asteroseismic calibration of the wave and convective Rossby numbers, and of the stiffness at the interface between the convective core and radiative envelope of intermediate-mass stars. We deduce these quantities for rotating dwarfs from the observed properties of their identified gravity and gravito-inertial modes. Methods. We relied on near-core

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9

BABAK, S. V., and L. P. GRISHCHUK. "FINITE-RANGE GRAVITY AND ITS ROLE IN GRAVITATIONAL WAVES, BLACK HOLES AND COSMOLOGY." International Journal of Modern Physics D 12, no. 10 (2003): 1905–59. http://dx.doi.org/10.1142/s0218271803004250.

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Theoretical considerations of fundamental physics, as well as certain cosmological observations, persistently point out to permissibility, and maybe necessity, of macroscopic modifications of the Einstein general relativity. The field theoretical formulation of general relativity helped us to identify the phenomenological seeds of such modifications. They take place in the form of very specific mass terms, which appear in addition to the field theoretical analog of the usual Hilbert–Einstein Lagrangian. We derive and study exact nonlinear equations of the theory, along with its linear approxim

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10

Auclair-Desrotour, P., and J. Leconte. "Semidiurnal thermal tides in asynchronously rotating hot Jupiters." Astronomy & Astrophysics 613 (May 2018): A45. http://dx.doi.org/10.1051/0004-6361/201731683.

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Context. Thermal tides can torque the atmosphere of hot Jupiters into asynchronous rotation, while these planets are usually assumed to be locked into spin-orbit synchronization with their host star. Aims. In this work, our goal is to characterize the tidal response of a rotating hot Jupiter to the tidal semidiurnal thermal forcing of its host star by identifying the structure of tidal waves responsible for variation of mass distribution, their dependence on the tidal frequency, and their ability to generate strong zonal flows. Methods. We develop an ab initio global modelling that generalizes

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11

Karmakar, P. K., and B. Borah. "New Aspects on Stability Analysis of a Planar Charge-varying Collisional Dust Molecular Cloud with Finite Thermal Inertia." Communications in Physics 24, no. 1 (2014): 45. http://dx.doi.org/10.15625/0868-3166/24/1/3599.

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A theoretical evolutionary model for the nonlinear stability analysis of a planar dust molecular cloud (DMC) in quasi-neutral hydrodynamic equilibrium on the Jeans scales of space and time is developed. It is based on a self-gravitating multi-fluid model consisting of the warm electrons and ions, and the inertial cold dust grains with partial ionization. The Jeans assumption of self-gravitating uniform medium is adopted for fiducially analytical simplification by neglecting the zero-order field. So, the equilibrium is justifiably treated initially as “homogeneous”, thereby validating nonlinear

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12

Beckwith, Andrew. "Calculating the Number of Universes in a Multiverse from First Principles with Linkage to Vacuum Energy and a Relationship with Nonlinear Early Universe B Fields. And the Early Universe B Field Connection to Non-Zero Graviton Mass." Journal of High Energy Physics, Gravitation and Cosmology 04, no. 03 (2018): 519–28. http://dx.doi.org/10.4236/jhepgc.2018.43030.

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13

Wu, Yue-Liang. "Theory of quantum gravity beyond Einstein and space-time dynamics with quantum inflation." International Journal of Modern Physics A 30, no. 28n29 (2015): 1545002. http://dx.doi.org/10.1142/s0217751x15450025.

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In this talk, I present a theory of quantum gravity beyond Einstein. The theory is established based on spinnic and scaling gauge symmetries by treating the gravitational force on the same footing as the electroweak and strong forces. A bi-frame space-time is initiated to describe the laws of nature. One frame space-time is a globally flat coordinate Minkowski space-time that acts as an inertial reference frame for the motions of fields, the other is a locally flat non-coordinate Gravifield space-time that functions as an interaction representation frame for the degrees of freedom of fields. T

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14

Holgado, G., S. Simón-Díaz, L. Haemmerlé, et al. "The IACOB project." Astronomy & Astrophysics 638 (June 2020): A157. http://dx.doi.org/10.1051/0004-6361/202037699.

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Context. The apparent lack of massive O-type stars near the zero-age main sequence, or ZAMS (at ages <2 Myr), is a topic that has been widely discussed in the past 40 yr. Different explanations for the elusive detection of these young massive stars have been proposed from the observational and theoretical side, but no firm conclusions have been reached yet. Aims. We reassess this empirical result here, benefiting from the high-quality spectroscopic observations of (more than 400) Galactic O-type stars gathered by the IACOB and OWN surveys. Methods. We used effective temperatures and surface

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15

Zhou, Xiang-Nan, and Wei-Qi Guo. "Localization of gravitino field with non-minimal coupling on a thick brane." Physica Scripta, October 19, 2023. http://dx.doi.org/10.1088/1402-4896/ad0527.

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Abstract In this paper, we investigate localization of a ﬁve-dimensional gravitino ﬁeld on a thick brane with non-minimal coupling. By choosing the gauge condition Ψz = 0, the equations of the Kaluza-Klein (KK) modes of gravitino are obtained. Compared with the case without non-minimal coupling,considering non-minimal coupling can make the zero mode and massive KK modes of a ﬁve-dimensional free massless gravitino ﬁeld be localized on the brane. By considering the Yukawa-like coupling and the non-minimum coupling simultaneously, it is found that the non-minimal coupling will change the mass sp

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16

Castellano, Alberto, Anamaría Font, Alvaro Herráez, and Luis E. Ibáñez. "A gravitino distance conjecture." Journal of High Energy Physics 2021, no. 8 (2021). http://dx.doi.org/10.1007/jhep08(2021)092.

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Abstract We conjecture that in a consistent supergravity theory with non-vanishing gravitino mass, the limit m3/2 → 0 is at infinite distance. In particular one can write Mtower ~ $$ {m}_{3/2}^{\delta } $$ m 3 / 2 δ so that as the gravitino mass goes to zero, a tower of KK states as well as emergent strings becomes tensionless. This conjecture may be motivated from the Weak Gravity Conjecture as applied to strings and membranes and implies in turn the AdS Distance Conjecture. We test this proposal in classical 4d type IIA orientifold vacua in which one obtains a range of values $$ \frac{1}{3}

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17

Joshipura, Anjan S., and Ketan M. Patel. "Soft supersymmetry breaking as the sole origin of neutrino masses and lepton number violation." Journal of High Energy Physics 2024, no. 1 (2024). http://dx.doi.org/10.1007/jhep01(2024)135.

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Abstract We discuss a scenario in which the supergravity induced soft terms, conventionally used for breaking supersymmetry, also lead to non-zero Majorana neutrino masses. The soft terms lead to the spontaneous violation of the lepton number at the gravitino mass scale m3/2 which in turn leads to (i) the Majorana masses of $$ \mathcal{O} $$ O (m3/2) for the right-handed neutrinos and (ii) the R-parity breaking at the same scale. The former contributes to light neutrino masses through the type I seesaw mechanism, while the latter adds to it through neutrino-neutralino mixing. Both contribution

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18

Drăgoi, Andrei-Lucian. "On a Possible Logarithmic Connection between Einstein’s Constant and the Fine-Structure Constant, in Relation to a Zero-energy Hypothesis." Physical Science International Journal, June 29, 2020, 22–40. http://dx.doi.org/10.9734/psij/2020/v24i530191.

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This paper brings into attention a possible logarithmic connection between Einstein’s constant and the fine-structure constant, based on a hypothetical electro-gravitational resistivity of vacuum: we also propose a zero-energy hypothesis (ZEH) which is essentially a conservation principle applied on zero-energy that mainly states a general quadratic equation having a pair of conjugate mass solutions for each set of coefficients, thus predicting a new type of mass “symmetry” called here “mass conjugation” between elementary particles (EPs) which predicts the zero/non-zero rest masses of all kno

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19

Blas, D., J. Martín Camalich, and J. A. Oller. "Unitarization of infinite-range forces: graviton-graviton scattering." Journal of High Energy Physics 2022, no. 8 (2022). http://dx.doi.org/10.1007/jhep08(2022)266.

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Abstract A method to unitarize the scattering amplitude produced by infinite-range forces is developed and applied to Born terms. In order to apply S-matrix techniques, based on unitarity and analyticity, we first derive an S-matrix free of infrared divergences. This is achieved by removing a divergent phase factor due to the interactions mediated by the massless particles in the crossed channels, a procedure that is related to previous formalisms to treat infrared divergences. We apply this method in detail by unitarizing the Born terms for graviton-graviton scattering in pure gravity and we

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20

Lee, Heon. "Bundle theoretic descriptions of massless single-particle state spaces; How do we perceive a moving quantum particle." Journal of Physics A: Mathematical and Theoretical, May 15, 2023. http://dx.doi.org/10.1088/1751-8121/acd5bc.

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Abstract Recently, a bundle theoretic description of massive single-particle state spaces, which is better suited for Relativistic Quantum Information Theory than the ordinary Hilbert space description, has been suggested. However, the mathematical framework presented in that work does not apply to massless particles. It is because, unlike massive particles, massless particles cannot assume the zero momentum state and hence the mass shell associated with massless particles has non-trivial cohomology. To overcome this difficulty, this paper suggests a new framework that can be applied to massle

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21

Drăgoi, Andrei-Lucian. "A Proposed SUSY Alternative (SUSYA) Based on a New Type of Seesaw Mechanism Applicable to All Elementary Particles and Predicting a New Type of Aether Theory." Physical Science International Journal, December 11, 2020, 19–52. http://dx.doi.org/10.9734/psij/2020/v24i1030218.

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This paper proposes a potentially viable “out-of-the-box” alternative (called “SUSYA”) to the currently known supersymmetry (SUSY) theory variants: SUSYA essentially proposes a new type of seesaw mechanism (SMEC) applicable to all elementary particles (EPs) and named “Z-SMEC”; Z-SMEC is a new type of charge-based mass symmetry/”conjugation” between EPs which predicts the zero/non-zero rest masses of all known/unknown EPs, EPs that are “conjugated” in boson-fermion pairs sharing the same electromagnetic charge (EMC). Z-SMEC is actually derived from an extended zero-energy hypothesis (eZEH) whic

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22

Tahery, Sara, Kazem Bitaghsir Fadafan, and Sahar Mojarrad Lamanjouei. "Holographic drag force with translational symmetry breaking." European Physical Journal C 84, no. 12 (2024). https://doi.org/10.1140/epjc/s10052-024-13642-4.

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AbstractIn order to investigate how the drag force is affected by translational symmetry breaking (TSB), we utilize a holographic model in which the background metric remains translational symmetric while a graviton mass or other fields in the theory break this symmetry. We calculate analytically the drag force, considering an asymptotic $$\hbox {AdS}_5$$ AdS 5 in which parameter $$\alpha $$ α arises from TSB. This parameter can be intuitively understood as a measure of TSB strength and we anticipate that non-zero values of it will affect the drag force. In this asymptotic $$\hbox {AdS}_5$$ Ad

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23

Bhattacharyya, Arpan, Debodirna Ghosh, Saptaswa Ghosh, and Sounak Pal. "Observables from classical black hole scattering in Scalar-Tensor theory of gravity from worldline quantum field theory." Journal of High Energy Physics 2024, no. 4 (2024). http://dx.doi.org/10.1007/jhep04(2024)015.

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Abstract In this paper, we compute the two observables, impulse and waveform, in a black hole scattering event for the Scalar-Tensor theory of gravity with a generic scalar potential using the techniques of Worldline Quantum Field Theory. We mainly investigate the corrections to the above mentioned observables due to the extra scalar degree of freedom. For the computation of impulse, we consider the most general scenario by making the scalar field massive and then show that each computed diagram has a smooth massless limit. We compute the waveform for scalar and graviton up to 2PM, taking the

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24

Bhaumik, Arko, and Soumitra SenGupta. "Moduli dynamics in effective nested warped geometry in four dimensions and some cosmological implications." Journal of High Energy Physics 2024, no. 9 (2024). http://dx.doi.org/10.1007/jhep09(2024)003.

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Abstract We analyze the effective four-dimensional dynamics of the extra-dimensional moduli fields in curved braneworlds having nested warping, with particular emphasis on the doubly warped model which is interesting in the light of current collider constraints on the mass of the Kaluza-Klein graviton. The presence of a non-zero brane cosmological constant (Ω) naturally induces an effective moduli potential in the four-dimensional action, which shows distinct features in dS (Ω > 0) and AdS (Ω < 0) branches. For the observationally interesting case of dS 4-branes, a metastable minimum in

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