6 citations · 7 across the 13 of their papers we have counts for
13 papers
Hydrodynamics without a relaxation gap: memory effects, nonlocality, and superdiffusion
Lorenzo Gavassino, Sukanya Mitra, Rajeev Singh
By studying a simple model of relativistic particles propagating through a background medium with an energy-dependent relaxation time that is unbounded from above, we investigate h…
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…
Poles from the conserved kinetic equation: The emerging gradient structure and causality riddle of relativistic hydrodynamics
Sukanya Mitra
In this work, the poles and the resulting dispersion spectra from the relativistic kinetic equation have been analyzed with the help of a proposed collision kernel that conserves b…
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…
Transport coefficients of hot and dense matter in relativistic heavy-ion collisions
Sukanya Mitra
The transport coefficients are known as the measure of system interactions, as well as the dynamical input of the hydrodynamic evolution equations of an expanding system created in…
Causality and Stability in Relativistic Hydrodynamics
Sukanya Mitra
The causality and stability of a relativistic hydrodynamic theory is shown to require a consensus between, either (i) newer degrees of freedom apart from the fundamental fluid fiel…
On the Approach Towards Equilibrium Through Momentum-Dependent Relaxation:Insights from Evolution of the Moments in Kinetic Theory
Reghukrishnan Gangadharan, Sukanya Mitra, Victor Roy
We investigate the impact of momentum-dependent relaxation time approximation in the Boltzmann equation within the Bjorken flow framework by analyzing the moments of the single-par…
Relativistic fluid dynamics in a 'hydro' frame
Sayantani Bhattacharyya, Sukanya Mitra, Shuvayu Roy +1
In this letter, we investigate how field redefinition influences the spectrum of linearized perturbations in relativistic fluid dynamics. We show that the hydrodynamic modes do not…
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…
Why do newer degrees of freedom appear in higher-order truncated hydrodynamic theory?
Sukanya Mitra
An exact derivation of relativistic hydrodynamics from an underlying microscopic theory has been shown to be an all-order theory. From the relativistic transport equation of kineti…
Causality and stability in relativistic hydrodynamic theory -- a choice to be endured
Sayantani Bhattacharyya, Sukanya Mitra, Shuvayu Roy
In this work, it has been indicated that the key features requisite for preserving causality and stability of the popularly existing relativistic hydrodynamic theories, can be tran…
Frame transformation and stable-causal hydrodynamic theory
Sayantani Bhattacharyya, Sukanya Mitra, Shuvayu Roy
In this work, a connection has been indicated between the different existing formulations of relativistic hydrodynamic theories, which, in order to be causal and stable, (i) either…
Acausality in truncated 'MIS'-type theory
Sukanya Mitra
The causal-stable Muller-Israel-Stewart (MIS) theory is known to have a finite number of out of equilibrium derivative order corrections but requires treating the viscosity tensor…