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15 papers · 1 filter
Modified Hamiltonian formalism for Regge Teitelboim Cosmology
Pinaki Patra, Md. Raju, Gargi Manna +1
The Ostrogradski approach for the Hamiltonian formalism of higher derivative theory is not satisfactory because of the reason that the Lagrangian cannot be viewed as a function on…
Entropy current in two dimensional anomalous hydrodynamics and a bound on the sum of the response parameters
Rabin Banerjee, Shirsendu Dey, Bibhas Ranjan Majhi
The exact expression for the entropy current of a fluid in presence of two dimensional gravitational anomalies is given. To make it compatible with the second law of thermodynamics…
A study of state variable participation in limit-cycle of induction motor
Krishnendu Chakrabarty, Urmila Kar
The paper presents bifurcation behavior of a single phase induction motor. This paper also attempts to discuss the bifurcation behavior of the system based on the evolution of diff…
Resolving the issue of branched Hamiltonian in modified Lanczos-Lovelock gravity
Soumendranath Ruz, Ranajit Mandal, Subhra Debnath +1
The Hamiltonian constraint Hc = NH = 0, defines a diffeomorphic structure on spatial manifolds by the lapse function N in general theory of relativity. However, it is not manifest…
Canonical formulation of scalar curvature squared action in higher dimensions
Subhra Debnath, Soumendranath Ruz, Abhik Kumar Sanyal
Canonical formulation for an action containing scalar curvature squared term in arbitrary dimension has been performed in maximally symmetric space-time. The quantum dynami…
Modified theory of gravity and the history of cosmic evolution
B. Modak, Kaushik Sarkar, Abhik Kumar Sanyal
A continuous transition from early Friedmann-like radiation era through to late time cosmic acceleration passing through a long Friedmann-like matter dominated era followed by a se…