A5053749940- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Neutrino Physics Research
- Stellar, planetary, and galactic studies
- Quantum, superfluid, helium dynamics
- Astronomy and Astrophysical Research
- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
- Geophysics and Gravity Measurements
- Nuclear physics research studies
- Black Holes and Theoretical Physics
- Cold Atom Physics and Bose-Einstein Condensates
- Astrophysics and Cosmic Phenomena
- Spectroscopy and Laser Applications
- Astrophysics and Star Formation Studies
- Advanced Differential Geometry Research
- Astro and Planetary Science
- Quantum chaos and dynamical systems
- Relativity and Gravitational Theory
- Astronomical and nuclear sciences
- Noncommutative and Quantum Gravity Theories
Maulana Abul Kalam Azad University of Technology, West Bengal
2020-2023
Abstract Nuclear astrophysics is a field at the intersection of nuclear physics and astrophysics, which seeks to understand engines astronomical objects origin chemical elements. This white paper summarizes progress status field, new open questions that have emerged, tremendous scientific opportunities opened up with major advances in capabilities across an ever growing number disciplines subfields need be integrated. We take holistic view discussing unique challenges regards science,...
In this paper, we intend to establish a rigorous mathematical relation between the Gibbons–Hawking–York (GHY) boundary term and conserved symmetric current which arises due Noether’s second theorem. The GHY is necessary ensure that equations of motion in general relativity are well-posed, it key ingredient thermodynamics black holes derivation Bekenstein–Hawking entropy. theorem on other hand relates symmetries action quantities system. prove connection can be established by considering...
Abstract In this letter, we investigate the basic property of Hilbert-Einstein action principle and its infinitesimal variation under suitable transformation metric tensor. We find that for in to be invariant, it must a scalar so as obey general covariance. From invariant principle, eventually derive Bianchi identity (where, both 1 st 2 nd forms are been dissolved) by using Lie derivative Palatini identity. Finally, from our derived identity, splitting into components performing cyclic...