113 citations · 894 across the 38 of their papers we have counts for
38 papers
Lectures on Introduction to Quantum Field Theory
Ghanashyam Date
These are lecture notes of the QFT-I course I gave in an online mode at Chennai Mathematical Institute. The course focussed on the free relativistic quantum fields, their interacti…
Cosmological Horizon and the Quadrupole Formula in de Sitter Background
Ghanashyam Date, Sk Jahanur Hoque
An important class of observables for gravitational waves consists of the fluxes of energy, momentum and angular momentum carried away by them and are well understood for weak grav…
Gravitational Waves from Compact Sources in de Sitter Background
Ghanashyam Date, Sk Jahanur Hoque
The concordance model of cosmology favours a universe with a tiny positive cosmological constant. A tiniest positive constant curvature, profoundly alters the asymptotic structure,…
Polymer quantization and Symmetries
Ghanashyam Date, Nirmalya Kajuri
Polymer quantization was discovered during the construction of Loop Quantum Cosmology. For the simplest quantum theory of one degree of freedom, the implications for dynamics were…
Revisiting canonical gravity with fermions
Ghanashyam Date
Fermions constitute an important component of matter and their quantization in presence of dynamical gravity is essential for any theory of quantum gravity. We revisit the classica…
Lectures on Constrained Systems
Ghanashyam Date
These lecture notes were prepared as a basic introduction to the theory of constrained systems which is how the fundamental forces of nature appear in their Hamiltonian formulation…