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pro vyhledávání: '"Yajnik P"'
We study thermal and non-thermal resonant leptogenesis in a general setting where a heavy scalar $\phi$ decays to right-handed neutrinos (RHNs) whose further out-of-equilibrium decay generates the required lepton asymmetry. Domination of the energy b
Externí odkaz:
http://arxiv.org/abs/2405.06603
Autor:
Yajnik, Urjit A.
We set up a formalism for calculating the energy density generated in a quantized massive scalar field in the course of the drastic change in spacetime geometry at the end of the inflationary era. The calculation relies on the notion of adiabatic vac
Externí odkaz:
http://arxiv.org/abs/2404.06785
Alternative Left-Right Models offer an attractive option to left-right models. Emerging from $E_6$ grand unification, these models are consistent with light scalars which do not induce flavour-changing neutral currents due to the presence of exotic q
Externí odkaz:
http://arxiv.org/abs/2402.04192
Autor:
Gaur, Himanshu, Yajnik, Urjit A.
Publikováno v:
JHEP01(2024)042
We study multi-charged moments and symmetry-resolved R\'enyi entropy of free compact boson for multiple disjoint intervals. The R\'enyi entropy evaluation involves computing the partition function of the theory on Riemann surfaces with genus g>1. Thi
Externí odkaz:
http://arxiv.org/abs/2310.14186
Publikováno v:
Eur. Phys. J. Plus 139, 185 (2024)
The Reheating era of inflationary universe can be parameterized by various parameters like reheating temperature \(T_{\text{re}}\), reheating duration \(N_{\text{re}}\) and average equation of state parameter \(\overline{\omega }_{\text{re}}\), which
Externí odkaz:
http://arxiv.org/abs/2309.06990
Autor:
Banerjee, Piyali, Yajnik, Urjit A.
Publikováno v:
JHEP Volume 2024, article number 7, (2024)
Breaking of discrete parity at high scale gives rise to $Z_2$-domain walls (DW). The metastability of such walls can make them relatively long lived and contradict standard cosmology. We consider two classes of theories with similar underlying featur
Externí odkaz:
http://arxiv.org/abs/2303.02593
Autor:
Godbole, Rohini M., Yajnik, Urjit
Publikováno v:
CURRENT SCIENCE, VOL. 121, NO. 5, 10 SEPTEMBER 2021
This is a homage to the memory of Prof. Steven Weinberg who passed away on 23 July 2021.
Comment: Sharing a reprint of Personal News item published in Current Science
Comment: Sharing a reprint of Personal News item published in Current Science
Externí odkaz:
http://arxiv.org/abs/2302.02704
Autor:
Yajnik, Urjit A.
The laws of quantum mechanics are couched in subtle mathematical language. The laws are not usually stated in a compact pedagogical form. Here I present a possible way to correct this. Essential facts can be distilled into seven statements that are e
Externí odkaz:
http://arxiv.org/abs/2301.05436
Publikováno v:
Journal of Clinical and Diagnostic Research, Vol 18, Iss 05, Pp 07-12 (2024)
Introduction: Rheumatic Heart Disease (RHD) remains the primary cause of acquired Valvular Heart Disease (VHD) in developing countries. The role of Tissue Doppler Indices (TDI) in RHD is understudied. This study aims to fill evidence gaps identified
Externí odkaz:
https://doaj.org/article/629e5d52d52e4cb3bb1ee7cf36ab63aa
Autor:
Borboruah, Z. A., Yajnik, U. A.
Publikováno v:
Phys. Rev. D 110 (2024), 043016
We study possible ways gravitational waves (GW) are sourced in a theory with minimal left-right symmetry breaking. Generically first order phase transitions (FOPT) lead to gravitational waves sourced by bubble dynamics, while second order phase trans
Externí odkaz:
http://arxiv.org/abs/2212.05829