I am working on in the interface of Classical and quantum gravity, laboratory tests for quantum gravity, non-singular cosmology, cosmological density perturbations, non-singular black holes, and particle physics beyond the Standard Model

 

I have initiated ideas with my collaborators on the multifield theory of cosmic inflation, such as assisted inflation and visible sector models of inflation, such as minimal supersymmetric Standard Model (MSSM) inflation.

 

I have provided the most general quadratic curvature action of gravity ( with my collaborators ), which is torsion-free and parity invariant, and also ghost-free and singularity-free action in a given background within infinite derivative theories of gravity. Such a gravitational action can potentially resolve cosmological and blackhole singularity problems in Einstein's theory of General Relativity by weakening gravitational interaction in a region of spacetime where non-local interactions become important. The latter region can be larger than the Schwarzschild's radius, thus, potentially resolving the information-loss paradox!

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Recently, I have proposed a protocol to test quantum gravity in a laboratory with my collaborators. In my opinion, this is a key protocol which will hopefully shed very light on the fabric of spacetime, whether gravitational interaction is being mediated by a classical or a quantum channel "Spin Entanglement Witness for Quantum Gravity", see my video lecture.

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When not researching, I spend my time with my lovely wife Prof. dr. Pratika Dayal