11 papers
BRST quantization of Carroll-Weyl gauged null strings
Sarthak Duary, Sourav Maji
We study the BRST quantization of the null string after completing its local gauge symmetry by Carroll-Weyl transformations. The resulting worldsheet theory possesses three first-c…
Liénard--Wiechert fields in AdS and flat-space antipodal matching from geodesic-centered Coulombic data
Sarthak Duary
We present a geometric derivation of Liénard--Wiechert fields in flat-space and AdS, emphasizing the origin of antipodal matching. In flat-space, the field of a uniformly moving c…
Path integral quantization of null bosonic strings with Carroll-Weyl ghosts
Sarthak Duary, Sourav Maji
We revisit the path integral quantization of the null bosonic string from the viewpoint that all local gauge symmetries of the Carrollian worldsheet must be gauge fixed before the…
Finite- BMN index across all vacuum sectors
Chi-Ming Chang, Sarthak Duary, Kangning Liu
We compute the finite- Witten index of BMN matrix quantum mechanics after summing over all partition-labeled supersymmetric vacuum sectors. Starting from the unitary-matrix inte…
Mass-Flow Invariance of -Cohomology in BMN Matrix Quantum Mechanics
Chi-Ming Chang, Zhengyuan Du, Sarthak Duary +2
We study the dependence of the dynamical supercharges of BMN matrix quantum mechanics on the mass parameter . Taking the -derivative at fixed canonical matrix variables, we…
From closed to open strings: the tensionless route in Kalb-Ramond background and noncommutativity
Sarthak Duary, Sourav Maji
We study tensionless bosonic strings propagating in the presence of a constant Kalb--Ramond background and show how closed strings undergo a transition into open strings. Working i…