657 citations · 2k across the 40 of their papers we have counts for
40 papers
Bi-partite vertex model and multi-colored link invariants
Saswati Dhara, Romesh K. Kaul, P. Ramadevi +1
Construction of representations of braid group generators from -state vertex models provide an elegant route to study knot and link invariants. Using such a braid group represen…
Matter coupling to degenerate spacetimes in first order gravity
Romesh K. Kaul
We develop a systematic study of the equations of motion in the first order gravity with matter fields for degenerate metrics. Like the Hilbert-Palatini action functional for pure…
A degenerate extension of the Schwarzschild exterior
Romesh Kaul, Sandipan Sengupta
We present vacuum spacetime solutions of first order gravity, which are described by the exterior Schwarzschild geometry in one region and by degenerate tetrads in the other. The i…
New solutions in pure gravity with degenerate tetrads
Romesh K. Kaul, Sandipan Sengupta
In first order formulation of pure gravity, we find a new class of solutions to the equations of motion represented by degenerate four-geometries. These configurations are describe…
Degenerate spacetimes in first order gravity
Romesh K. Kaul, Sandipan Sengupta
We present a systematic framework to obtain the most general solutions of the equations of motion in first order gravity theory with degenerate tetrads. There are many possible sol…
Torsional instanton effects in quantum gravity
Romesh K. Kaul, Sandipan Sengupta
We show that, in the first order gravity theory coupled to axions, the instanton number of the Giddings-Strominger wormhole can be interpreted as the Nieh-Yan topological index. Th…