134 citations · 393 across the 20 of their papers we have counts for
21 papers
Complex Phase Structure of Kerr-AdS Black Holes: Critical Saddles and Fisher Zeros
Bum-Hoon Lee, Hocheol Lee, Somyadip Thakur
We study the complex saddle structure of singly rotating Kerr--AdS black holes using a two-variable reduced model in the grand canonical ensemble at fixed angular velocity, …
Gauss-Bonnet corrected string/black hole transition in large dimensions
Bum-Hoon Lee, Hocheol Lee, Somyadip Thakur
We develop a unified analytic treatment of the Horowitz--Polchinski string/black hole correspondence that systematically incorporates higher-derivative corrections to gravity. Work…
Global causality constraints in rotating scalar-tensor spacetimes
Bum-Hoon Lee, Nils A. Nilsson, Somyadip Thakur
Modified gravity is often formulated as an effective field theory (EFT), where higher-order corrections parametrize departures from General Relativity. We argue that such correctio…
Entanglement Rényi entropies in celestial holography
Federico Capone, Andy O'Bannon, Ronnie Rodgers +1
Celestial holography is the conjecture that scattering amplitudes in -dimensional asymptotically Minkowski spacetimes are dual to correlators of a -dimensional conformal…
Induced Cosmological Anisotropies and CMB Anomalies by a non-Abelian Gauge-Gravity Interaction
Bum-Hoon Lee, Hocheol Lee, Wonwoo Lee +2
We present a non-abelian cousin of the model presented in \cite{Lee:2022rtz} which induces cosmological anisotropies on top of standard FLRW geometry. This is in some sense doing a…
Induced cosmological anisotropy by a gauge-gravity interaction
Bum-Hoon Lee, Hochoel Lee, Wonwoo Lee +2
We present a simple model which generates cosmological anisotropies on top of standard FLRW geometry. This is in some sense reminiscent of the mean field approximation, where the m…
Inevitable manifestation of wiggles in the expansion of the late Universe
Ozgur Akarsu, Eoin O. Colgain, Emre Ozulker +2
Using the fact that the comoving angular diameter distance to the last scattering surface is strictly constrained almost model independently, we show that, for any model agreeing w…
Is Local At Odds With Dark Energy EFT?
Bum-Hoon Lee, Wonwoo Lee, Eoin Ó Colgáin +2
Local determinations currently fall in a window between km/s/Mpc (TRGB) and km/s/Mpc (Tully-Fisher). In contrast, BAO data calibrated in an early…
On interpolating anomalous dimension of twist-two operators with general spins
Aritra Banerjee, Abhishek Chowdhury, Somyadip Thakur +1
We study non-perturbative interpolating functions to probe the physics of anomalous dimensions associated with twist-two operators in SYM of finite and infinite spin.…
Stationary Solutions from the Large D Membrane Paradigm
Mangesh Mandlik, Somyadip Thakur
It has recently been shown that the dynamics of black holes in large number of dimensions D can be recast as the dynamics of a probe membrane propagating in the background spacetim…
Currents and Radiation from the large Black Hole Membrane
Sayantani Bhattacharyya, Anup Kumar Mandal, Mangesh Mandlik +4
It has recently been demonstrated that black hole dynamics in a large number of dimensions reduces to the dynamics of a codimension one membrane propagating in flat space. In t…
S-duality invariant perturbation theory improved by holography
Abhishek Chowdhury, Masazumi Honda, Somyadip Thakur
We study anomalous dimensions of unprotected low twist operators in the four-dimensional supersymmetric Yang-Mills theory. We construct a class of interpola…
A Charged Membrane Paradigm at Large D
Sayantani Bhattacharyya, Mangesh Mandlik, Shiraz Minwalla +1
We study the effective dynamics of black hole horizons in Einstein-Maxwell theory in a large number of spacetime dimensions . We demonstrate that horizon dynamics may be recast…
Logarithmic Corrections to Twisted Indices from the Quantum Entropy Function
Abhishek Chowdhury, Rajesh Kumar Gupta, Shailesh Lal +2
We compute logarithmic corrections to the twisted index in four-dimensional and string theories using the framework of the Quantum Entropy F…
Logarithmic Corrections to Extremal Black Hole Entropy in N = 2, 4 and 8 Supergravity
Rajesh Kumar Gupta, Shailesh Lal, Somyadip Thakur
We compute the logarithmic correction to black hole entropy about exponentially suppressed saddle points of the Quantum Entropy Function corresponding to Z(N) orbifolds of the near…
Heat Kernels on the AdS(2) cone and Logarithmic Corrections to Extremal Black Hole Entropy
Rajesh Kumar Gupta, Shailesh Lal, Somyadip Thakur
We develop new techniques to efficiently evaluate heat kernel coefficients for the Laplacian in the short-time expansion on spheres and hyperboloids with conical singularities. We…
Higher Spin Cosmology
Chethan Krishnan, Avinash Raju, Shubho Roy +1
We construct cosmological solutions of higher spin gravity in 2+1 dimensional de Sitter space. We show that a consistent thermodynamics can be obtained for their horizons by demand…
Second order transport from anomalies
Sayantani Bhattacharyya, Justin R. David, Somyadip Thakur
We study parity odd transport at second order in derivative expansion for a non-conformal charged fluid. We see that there are 27 parity odd transport coefficients, of which 12 are…
Sum rules and three point functions
Justin R. David, Somyadip Thakur
Sum rules constraining the R-current spectral densities are derived holographically for the case of D3-branes, M2-branes and M5-branes all at finite chemical potentials. In each of…
Shear sum rules at finite chemical potential
Justin R. David, Sachin Jain, Somyadip Thakur
We derive sum rules which constrain the spectral density corresponding to the retarded propagator of the T_{xy} component of the stress tensor for three gravitational duals. The sh…
Hydrodynamics of R-charged D1-branes
Justin R. David, Manavendra Mahato, Somyadip Thakur +1
We study the hydrodynamic properties of strongly coupled Yang-Mills theory of the D1-brane at finite temperature and at a non-zero density of R-charge in the framework of g…