Sanjib Katuwal

I am a theoretical physicist working in cosmology and quantum field theory. My interests include the physics of the early universe, inflation, and the mathematical structure of spacetime.

This site hosts my research links, articles, and projects.

Articles

Selected research and preprints (links point to arXiv). For the full list, see my Google Scholar profile.

Inflaton Effective Potential from Photons for General ε

arXiv:2101.06760

Early-universe cosmology • QFT in curved spacetime • Peer-reviewed (Phys. Rev. D)

Computes photon-induced corrections to the effective potential of a charged inflaton in inflationary backgrounds with general slow-roll parameter ε, connecting curved-spacetime results to known flat-space limits.

Inflation Effective potential Photon loops Curved spacetime

Reheating with Effective Potentials

arXiv:2208.11146

Post-inflation dynamics • Reheating • Peer-reviewed (JCAP)

Studies reheating after inflation using effective potential methods, tracking how gauge-field effects influence inflaton dynamics and energy transfer in the transition to a radiation-dominated universe.

Reheating Inflaton dynamics Effective field theory

Quantum Gravitational Corrections to Electromagnetism and Backreaction

arXiv:2307.02580

Quantum gravity • Electromagnetism • Backreaction • Extended work / dissertation-related

Develops gauge-independent quantum-gravitational corrections to electromagnetic dynamics and explores backreaction effects relevant to cosmological backgrounds and effective operators.

Quantum gravity Maxwell corrections Backreaction Cosmology

Contact

Email: sanjib@sanjibkatuwal.com

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