Relevant bibliographies by topics / Non-zero Gravitino Mass

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Academic literature on the topic 'Non-zero Gravitino Mass'

Author: Grafiati
Published: 7 September 2023
Last updated: 31 July 2025

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

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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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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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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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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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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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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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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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Dissertations / Theses on the topic "Non-zero Gravitino Mass"

1

Chakraborty, Sabyasachi. "Some aspects of the phenomenology of supersymmetric theories and the Large Hadron Collider." Thesis, 2019. http://hdl.handle.net/10821/8284.

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In spite of its enormous success, the Standard Model (SM) of particle physics suffers from a few drawbacks. For example, the SM cannot account for the observations of neutrino mass and mixing and the existence of dark matter (DM). Supersymmetry (SUSY) is capable of addressing these issues in an elegant manner. Nevertheless, the non-observations of the superpartners to date has put stringent constraints on their masses. In the light of this, in this thesis, we consider a U(1)R symmetric model where the R-charges are identified with lepton numbers in such a way that one of the leftchiral sneutri
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