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gr-qc2025
Spontaneous symmetry breaking induced by curvature : Analysis via non-perturbative 2PI Hartree approximation
Vishal Nath, Kinsuk Roy, Sourav Bhattacharya
In this work we investigate the spontaneous symmetry breaking (SSB) induced by a classical background spacetime's curvature, via the 2 particle irreducible (2PI) non-perturbative e…
gr-qc2025
Yukawa coupling, and inflationary correlation functions for a spectator scalar via stochastic spectral expansion
Sourav Bhattacharya, Sudesh Kumar
We consider a stochastic spectator scalar field coupled to fermion via the Yukawa interaction, in the inflationary de Sitter background. We consider the fermion to be massless, and…
gr-qc2024
Self interacting scalar field theory in general curved spacetimes at zero and finite temperature revisited
Vishal Nath, Sourav Bhattacharya
We revisit the problem of spontaneous symmetry breaking (SSB), its restoration, and phase transition for a self interacting quantum scalar field in a general curved background, at…