Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Ray, Anupam"'
The memory burden effect is an explicit resolution to the information paradox by which an evaporating black hole acquires quantum hair, which then suppresses its rate of mass loss with respect to the semi-classical Hawking rate. We show that this has
Externí odkaz:
http://arxiv.org/abs/2410.22702
WIMP-type dark matter may have additional interactions that break baryon number, leading to induced nucleon decays which are subject to direct experimental constraints from proton decay experiments. In this work, we analyze a possibility of continuou
Externí odkaz:
http://arxiv.org/abs/2405.18472
Autor:
Ray, Anupam, Qian, Yong-Zhong
Publikováno v:
Phys.Rev.D 110 (2024) 4, 043007
We study $\nu_\mu$-$\nu_s$ and $\bar\nu_\mu$-$\bar\nu_s$ mixing in the protoneutron star (PNS) created in a core-collapse supernova (CCSN). We point out the importance of the feedback on the general composition of the PNS in addition to the obvious f
Externí odkaz:
http://arxiv.org/abs/2404.14485
Publikováno v:
Phys.Rev.D 110 (2024) 4, 043006
Sun-like stars can transmute into comparable mass black holes by steadily accumulating heavy non-annihilating dark matter particles over the course of their lives. If such stars form in binary systems, they could give rise to quasi-monochromatic, per
Externí odkaz:
http://arxiv.org/abs/2403.13886
Strongly-interacting dark matter can be accumulated in large quantities inside the Earth, and for dark matter particles in a few GeV mass range, it can exist in large quantities near the Earth's surface. We investigate the constraints imposed on such
Externí odkaz:
http://arxiv.org/abs/2402.03431
Probing self-interacting sterile neutrino dark matter with the diffuse supernova neutrino background
Publikováno v:
Phys. Rev. D 108, 123011 (2023)
The neutrinos in the diffuse supernova neutrino background (DSNB) travel over cosmological distances and this provides them with an excellent opportunity to interact with dark relics. We show that a cosmologically-significant relic population of keV-
Externí odkaz:
http://arxiv.org/abs/2310.07145
Autor:
Pospelov, Maxim, Ray, Anupam
Publikováno v:
JCAP 01 (2024) 029
A sub-component of dark matter with a short collision length compared to a planetary size leads to efficient accumulation of dark matter in astrophysical bodies. We analyze possible neutrino signals from the annihilation of such dark matter and concl
Externí odkaz:
http://arxiv.org/abs/2309.10032
Autor:
Ray, Anupam, Qian, Yong-Zhong
Publikováno v:
Phys. Rev. D 108, 063025 (2023)
We present an approximate treatment of the mixing between $\nu_{\tau}$ ($\bar\nu_{\tau}$) and a sterile species $\nu_s$ ($\bar\nu_s$) with a vacuum mass-squared difference of $\sim$ 10$^2$-10$^3$ keV$^2$ in protoneutron stars created in core-collapse
Externí odkaz:
http://arxiv.org/abs/2306.08209
Publikováno v:
Phys. Rev. Lett. 131, 011005 (2023)
New particles in theories beyond the standard model can manifest as stable relics that interact strongly with visible matter and make up a small fraction of the total dark matter abundance. Such particles represent an interesting physics target since
Externí odkaz:
http://arxiv.org/abs/2303.03416
Publikováno v:
Phys. Rev. Lett. 131, 091401 (2023)
Dark matter from the galactic halo can accumulate in neutron stars and transmute them into sub-2.5 $M_{\odot}$ black holes if the dark matter particles are heavy, stable, and have interactions with nucleons. We show that non-detection of gravitationa
Externí odkaz:
http://arxiv.org/abs/2302.07898