Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Govindarajan, T R"'
Autor:
Govindarajan, T. R., Tibrewala, Rakesh
Landau Yang theorem is well known for the past several decades. It prohibits decay of a massive spin 1 particle to two photons. This emerges simply from the representation theory of the Poincare group and Bose Statistics. It does not require any acti
Externí odkaz:
http://arxiv.org/abs/2410.04786
Autor:
Govindarajan, T R
A novel proposal linking the origin of supermassive blackhole formation and ultralight dark matter. Ultralight bosons of mass $10^{-22}-10^{-24}$ eV which is one of the front running proposal for dark matter could also linked with the formation and e
Externí odkaz:
http://arxiv.org/abs/2407.21355
Noncommutative geometry is one of the quantum gravity theories, which various researchers have been using to describe different physical and astrophysical systems. However, so far, no direct observations can justify its existence, and this theory rem
Externí odkaz:
http://arxiv.org/abs/2111.05878
Publikováno v:
IJMPD, 30, 13 (2021) 2150101
The indirect evidence for at least a dozen massive white dwarfs violating the Chandrasekhar mass-limit is considered to be one of the wonderful discoveries in astronomy for more than a decade. Researchers have already proposed a diverse amount of mod
Externí odkaz:
http://arxiv.org/abs/2101.06272
Publikováno v:
Modern Physics Letters A35,2050303 (2020)
We review gauge invariant $\mathcal N =1$ supersymmetric massive $U(1)$ gauge theory coupled to matter and Stuckelberg superfields. We focus on the leading order self energy and vertex correction to the matter field in the massless limit of both the
Externí odkaz:
http://arxiv.org/abs/2008.06958
Publikováno v:
IJMPD, 30, 5 (2021) 2150034
Chandrasekhar made the startling discovery about nine decades back that the mass of compact object white dwarf has a limiting value, once nuclear fusion reactions stop therein. This is the Chandrasekhar mass-limit, which is $\sim1.4M_\odot$ for a non
Externí odkaz:
http://arxiv.org/abs/1912.00900
Publikováno v:
Mod. Phys. Lett. A 34, 2050013 (2019)
It is known that static and spherically symmetric black hole solutions of general relativity in different spacetimes can be embedded into higher dimensional flat spacetime. Given this result, we have explored the thermodynamic nature of black holes \
Externí odkaz:
http://arxiv.org/abs/1908.09074
Publikováno v:
Mod. Phys. Lett. A Vol. 33 (2019) 1950330
In this letter, we propose a new model of fuzzy dark matter based on Stueckelberg theory. Dark matter is treated as a Bose-Einstein condensate of Stueckelberg particles and the resulting cosmological effects are analyzed. Fits are understood for the
Externí odkaz:
http://arxiv.org/abs/1902.08768
Publikováno v:
Modern Physics Letters A 2 Vol. 34 (2019) 1950141
Stueckelberg mechanism introduces a scalar field, known as Stueckelberg field, so that gauge symmetry is preserved in the massive abelian gauge theory. In this work, we show that the role of the Stueckelberg field is similar to the Kulish and Faddeev
Externí odkaz:
http://arxiv.org/abs/1902.06400
Novel bound states are obtained for manifolds with singular potentials. These singular potentials require proper boundary conditions across boundaries. The number of bound states match nicely with what we would expect for black holes. Also they serve
Externí odkaz:
http://arxiv.org/abs/1610.02784