Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Dabholkar, Atish"'
Autor:
Dabholkar, Atish, Moitra, Upamanyu
Publikováno v:
JHEP 12 (2024) 012
We construct $\mathbb{Z}_N$ orbifolds of the ten-dimensional heterotic string theories appropriate for implementing the stringy replica method for the calculation of quantum entanglement entropy. A novel feature for the heterotic string is that the g
Externí odkaz:
http://arxiv.org/abs/2407.17553
Autor:
Dabholkar, Atish, Moitra, Upamanyu
Publikováno v:
JHEP 06 (2024) 053
We compute the exact one-loop partition function of $\mathbb{Z}_N$ orbifolds of Euclidean BTZ black hole with the aim to compute the entanglement entropy of the black hole horizon in string theory as a function of the mass and spin of the black hole
Externí odkaz:
http://arxiv.org/abs/2312.14253
Autor:
Dabholkar, Atish, Moitra, Upamanyu
Publikováno v:
JHEP 06 (2024) 209
We consider $\mathbb{Z}_N$ orbifolds of Type-II compactifications to four and six dimensions on several Calabi-Yau manifolds in the orbifold limit with the aim to compute the entanglement entropy. The spectrum can contain tachyons in the doubly-twist
Externí odkaz:
http://arxiv.org/abs/2310.13735
Autor:
Dabholkar, Atish, Moitra, Upamanyu
Publikováno v:
Phys.Rev.D 109 (2024) 12, L12190 (Letter)
We analyze the one-loop quantum entanglement entropy in ten-dimensional Type-II string theory using the orbifold method by analytically continuing in $N$ the genus-one partition function for string orbifolds on $\mathbb{R}^2/\mathbb{Z}_N$ conical spa
Externí odkaz:
http://arxiv.org/abs/2306.00990
Autor:
Benevides, André, Dabholkar, Atish
We consider a scalar field coupled to massless fermions through Yukawa couplings, such as the Higgs field, in a Robertson-Walker spacetime. We compute the nonlocal quantum effective action as a functional of the background scalar field and the scale
Externí odkaz:
http://arxiv.org/abs/2211.15582
Autor:
Dabholkar, Atish
We define entanglement entropy in string perturbation theory using the orbifold method -- a stringy analog of the replica method in field theory. To this end, we use the Newton series to analytically continue in $N$ the partition functions for string
Externí odkaz:
http://arxiv.org/abs/2207.03624
Autor:
Dabholkar, Atish, Putrov, Pavel
Mock theta functions were introduced by Ramanujan in 1920 but a proper understanding of mock modularity has emerged only recently with the work of Zwegers in 2002. In these lectures we describe three manifestations of this apparently exotic mathemati
Externí odkaz:
http://arxiv.org/abs/2110.09790
Publikováno v:
SciPost Phys. 9, 072 (2020)
We derive a holomorphic anomaly equation for the Vafa-Witten partition function for twisted four-dimensional $\mathcal{N} =4$ super Yang-Mills theory on $\mathbb{CP}^{2}$ for the gauge group $SO(3)$ from the path integral of the effective theory on t
Externí odkaz:
http://arxiv.org/abs/2004.14387
Publikováno v:
JHEP 1910 (2019) 284
A proper definition of the path integral of quantum gravity has been a long-standing puzzle because the Weyl factor of the Euclidean metric has a wrong-sign kinetic term. We propose a definition of two-dimensional Liouville quantum gravity with cosmo
Externí odkaz:
http://arxiv.org/abs/1905.12689
We show that the Atiyah-Patodi-Singer $\eta$-invariant can be related to the temperature dependent Witten index of a noncompact theory and give a new proof of the APS theorem using scattering theory. We relate the $\eta$-invariant to a Callias index
Externí odkaz:
http://arxiv.org/abs/1905.05207