1 citations · 1 across the 2 of their papers we have counts for
7 papers
Relativistic Dispersion Spectra across Lorentz boosted frames: Spurious modes and the enigma of causality
Sayantani Bhattacharyya, Sukanya Mitra, Shuvayu Roy +1
The analysis of excitation spectra in gradient-expanded relativistic fluid theories frequently leads to pathologies under Lorentz boosts. However, extracting the dispersion modes i…
Necessary conditions for causality from linearized stability at ultra-high boosts
Shuvayu Roy, Sukanya Mitra, Rajeev Singh
In this work, we provide a novel method to constrain the causal parameter space of a relativistic hydrodynamic system exclusively from its linear stability analysis at non-zero mom…
Stochastic Evolution of Primordial Black Holes to near-extremality in EFTs of Gravity
Soham Acharya, Shuvayu Roy, Sudipta Sarkar
The search for dark matter candidates includes primordial black holes (PBHs) as possible constituents. Recent studies show that some PBHs can survive to the present epoch by gainin…
Ladder Symmetry: The Necessary and Sufficient Condition for Vanishing Love Numbers
Chanchal Sharma, Shuvayu Roy, Sudipta Sarkar
Black holes in four-dimensional, asymptotically flat general relativity have vanishing static tidal Love numbers (TLNs), a property tied to a hidden symmetry of the perturbation eq…
EFT Corrections to Majumdar-Papapetrou Black Holes
Soham Acharya, Shuvayu Roy, Sudipta Sarkar
Recent studies on extremal black holes within effective field theories (EFT) of gravity have revealed an intriguing phenomenon: tidal forces near the horizon experience significant…
Field redefinition and its impact in relativistic hydrodynamics
Sayantani Bhattacharyya, Sukanya Mitra, Shuvayu Roy +1
In this paper, we explore the impact of field redefinition on the spectrum of linearized perturbations in relativistic hydrodynamics. We observe that the spectrum of hydrodynamics…