66 citations · 125 across the 6 of their papers we have counts for
6 papers
Perturbation Theory for the Logarithm of a Positive Operator
Nima Lashkari, Hong Liu, Srivatsan Rajagopal
In various contexts in mathematical physics one needs to compute the logarithm of a positive unbounded operator. Examples include the von Neumann entropy of a density matrix and th…
Modular Flow of Excited States
Nima Lashkari, Hong Liu, Srivatsan Rajagopal
We develop new techniques for studying the modular and the relative modular flows of general excited states. We show that the class of states obtained by acting on the vacuum (or a…
Global Anomalies, Discrete Symmetries, and Hydrodynamic Effective Actions
Paolo Glorioso, Hong Liu, Srivatsan Rajagopal
We derive effective actions for parity-violating fluids in both and dimensions, including those with anomalies. As a corollary we confirm the most general constitut…
Holographic Trace Anomaly and Local Renormalization Group
Srivatsan Rajagopal, Andreas Stergiou, Yechao Zhu
The Hamilton-Jacobi method in holography has produced important results both at a renormalization group (RG) fixed point and away from it. In this paper we use the Hamilton-Jacobi…
Quantization of B-I electrodynamics and B-I modified gravity using Faddeev-Popov gauge-fixing procedure
Srivatsan Rajagopal, Ajit Kumar
We investigate the quantized versions of Born Infeld electrodynamics and Born Infeld Gravity. We derive Feynman rules for B-I electrodynamics by deriving an effective Lagrangian wi…
Ostrogradsky instability and Born-Infeld modified cosmology in Palatini formalism
Srivatsan Rajagopal, Ajit Kumar
The Ostrogradsky instability of higher derivative Lagrangians is derived from first principles using Control theory and Lyapunov Stability Analysis. This result is then used to arg…