90 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of KalyaniIN12 papers
- Bankura UniversityIN6 papers
- University of BurdwanIN4 papers
- Jangipur CollegeIN3 papers
- Saha Institute of Nuclear PhysicsIN3 papers
- Jadavpur UniversityIN2 papers
- Aliah UniversityIN1 paper
- Calcutta Research GroupIN1 paper
- Indian Institute of Management CalcuttaIN1 paper
- Indian Institute of Technology IndoreIN1 paper
- Murshidabad UniversityIN1 paper
- National Institute of Science Education and ResearchIN1 paper
33 papers
Vulnerability of f(Q) gravity theory and a possible resolution
Dalia Saha, Abhik Kumar Sanyal
Both the generalized teleparallel theories of gravity suffer from some serious problems. The strong coupling issue appearing as a consequence of extra degrees of freedom in the `ge…
Phase space structure of symmetric teleparallel theory of gravity
Dalia Saha, Abhik Kumar Sanyal
The `Generalized Symmetric Teleparallel Gravity' (GSTG) does not admit diffeomorphic invariance, since the auxiliary field as well as the shift vector act as non-propagating dynami…
Exploring QGP-like phenomena with Charmonia in collisions at TeV
Captain R. Singh, Partha Bagchi, Raghunath Sahoo +1
In ultrarelativistic collisions of nuclei at the Large Hadron Collider, the created QCD environment rapidly changes, leading to a non-adiabatic evolution of the quantum states invo…
Issue of Branched Hamiltonian, Inflation and indispensability of scalar field in generalized Teleparallel theories
Dalia Saha, Jyoti Prasad Saha, Abhik kumar sanyal
Generalized Teleparallel gravity theories were proposed as alternatives to the dark energy and modified theories of gravity. However, minimal generalization of TEGR and STEGR lead…
Reconstructing modified and alternative theories of gravity
Dalia Saha, Manas Chakrabortty, Abhik Kumar Sanyal
A viable radiation dominated era in the early universe is best described by the standard (FLRW) model of cosmology. In this short review, we demonstrate reconstruction of the forms…
Inflation and cosmological evolution with gravity theory
Dalia Saha, Jyoti Prasad Saha, Abhik Kumar Sanyal
In the last decade Planck PR4 data together with ground-based experimental data such as, BK18, BAO and CMB lensing, tightened constraint of the tensor to scalar ratio, starting for…
A viable form of the metric Teleparallel F(T) theory of gravity
Manas Chakrabortty, Nayem Sk, Abhik Kumar Sanyal
Unlike F(R) gravity, pure metric F(T) gravity in the vacuum dominated era, ends up with an imaginary action and is therefore not feasible. This eerie situation may only be circumve…
Perusing Buchbinder--Lyakhovich canonical formalism for Higher-Order Theories of Gravity
Dalia Saha, Abhik Kumar Sanyal
Ostrogradsky's, Dirac's and Horowitz's techniques of higher order theories of gravity produce identical phase-space structures. The problem is manifested in the case of Gauss-Bonne…
Probing symmetric teleparallel gravity in the early universe
Avik De, Dalia Saha, Ganesh Subramaniam +1
General theory of relativity can be equivalently formulated on a flat space-time associating a torsion-free affine connection of non-vanishing non-metricity scalar . In this pap…
The issue of Branched Hamiltonian in F(T) Teleparallel Gravity
Manas Chakrabortty, Kaushik Sarkar, Abhik Kumar Sanyal
As in the case of Lanczos-Lovelock gravity, the main advantage of F(T) gravity is said to be that it leads to second order field equations, while F(R) gravity theory leads to fourt…
Inflation with F(T) Teleparallel Gravity
Manas Chakrabortty, Nayem Sk, Susmita Sanyal +1
We study early universe with a particular form of F(T) Telleparallel gravity theory, in which inflation is driven by a scalar field. To ensure slow rollover, two different potentia…
Conflict between some higher-order curvature invariant terms
Dalia Saha, Mohosin Alam, Ranajit Mandal +1
A viable quantum theory does not allow curvature invariant terms of different higher orders to be accommodated in the gravitational action. We show that there is indeed a conflict…
Canonical equivalence, quantization and anisotropic inflation in higher order theory of gravity
Subhra Debnath, Abhik Kumar Sanyal
We construct phase-space structure of a typical higher-order theory of gravity, in the background of anisotropic Bianchi-1 mini-superspace, following `Modified Horowitz Formalism'…
New conserved tensors and Brans-Dicke type field equation, using integrability condition
Abhik Kumar Sanyal, Bijan Modak, Manas Chakrabortty
We explore some new off-shell and on-shell conserved quantities for a scalar field in Minkowski space, using integrability condition. The off-shell conserved tensors are related to…
Early universe in view of a modified theory of gravity
Ranajit Mandal, Dalia Saha, Mohosin Alam +1
We study the quantum evolution of the early universe, its semi-classical analogue together with inflationary regime, in view of a generalized modified theory of gravity. The action…
Canonical equivalence in anisotropic models for higher order theory of gravity
Subhra Debnath, Abhik Kumar Sanyal
We show that as in the case of isotropic models, the `Dirac Algorithm' and `Modified Horowitz' Formalism' lead to identical phase-space structure of the Hamiltonian for the gravita…
Analyzing Conserved Currents in F(R) theory of gravity
Nayem Sk, Manas Chakrabortty, Abhik Kumar Sanyal
F(R) theory of gravity is claimed to admit a host of conserved currents under the imposition of Noether symmetry following various techniques. However, for a constrained system suc…
Thermodynamics of Reissner-Nordström Black Holes in Higher Dimensions: Rainbow Gravity Background With General Uncertainty Principle
Amritendu Haldar, Ritabrata Biswas
In this paper, we investigate the thermodynamic properties of Reissner-Nordström black holes embedded in higher dimensions in the framework of rainbow gravity incorporating t…
Geometrothermodynamic Analysis and - criticality of Higher Dimensional Charged Gauss-Bonnet Black Holes With First Order Entropy Correction
Amritendu Haldar, Ritabrata Biswas
We consider a charged Gauss-Bonnet black hole in -dimensional spacetime and examine the effect of thermal fluctuations on the thermodynamics of the concerned black hole. At firs…
Thermodynamics of -Dimensional Charged AdS (Anti-de Sitter) Black Holes: Hamiltonian Approach and Clapeyron Equation
Amritendu Haldar, Ritabrata Biswas
The study of thermodynamics in the view of the Hamiltonian approach is a newest tool to analyze the thermodynamic properties of the black holes. In this letter, we investigate the…
Thermodynamic studies of Different Type of Black Holes: General Uncertainty Principle Approach
Amritendu Halder, Ritabrata Biswas
We present an investigation on thermodynamics of two different types of black holes viz. Kiselev black hole (asymptotically flat) and Taub-NUT (non-asymptotically flat) black hole.…
Semiclassical gravity with a nonminimally coupled scalar field
Abhik Kumar Sanyal
Semiclassical approximation to the Wheeler-DeWitt equation which corresponds to gravity with a minimally coupled scalar field has been performed. To the leading order, vacuum Einst…
Enlightening the dark universe
Abhik Kumar Sanyal
Lot of avenues, the black hole, the wormhole, the dark matter, the dark energy etc. have been opened since the advent of General Theory of Relativity in 1915. Cosmology, the physic…
Canonical formulation of Pais-Ulhenbeck action and resolving the issue of branched Hamiltonian
Kaushik Sarkar, Nayem Sk, Ranajit Mandal +1
Shortcomings of Dirac's constrained analysis in the context of fourth order Pais-Uhlenbeck oscillator action and the appearance of badly affected phase-space Hamiltonian for a gene…