41 citations · 80 across the 18 of their papers we have counts for
19 papers · 1 filter
Carroll-Weyl gauged null strings in AdS
Sarthak Duary, Sourav Maji
We study the Carroll-Weyl gauged null string in the Poincaré patch of and its BRST quantization. In Poincaré coordinates , the radial conformal Killin…
Large-charge ADHM-BMN index matching
Sarthak Duary, Kangning Liu
We compare the superconformal index of three-dimensional ADHM theory in fixed monopole sectors with the index of the BMN matrix model around fuzzy-sphere vacua. The monopole charge…
Tropical Open Strings in a Kalb-Ramond Background
Sarthak Duary, Vi Hong, Sourav Maji
We study tropical open strings arising from the analytically continued action of tropological sigma models in the presence of a constant Kalb-Ramond background. We show that the ba…
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 ch…
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 s…
Covariant phase space approach to noncommutativity in tensile and tensionless open strings
Pratik K. Das, Sarthak Duary, Sourav Maji
We study noncommutativity in open strings using the covariant phase space formalism. For tensile open strings in a constant Kalb-Ramond background, we show that the (pre)-symplecti…
Magnetic corrections to the classical soft photon theorems at all orders
Sarthak Duary, Pabitra Ray
When a set of charged or dyonic objects scatter and subsequently disperse, the process generically emits electromagnetic radiation. The classical soft photon theorem constrains the…
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…
Waveform, memory and classical soft scalar theorems
Sarthak Duary, Pabitra Ray
We examine a scattering process in which a set of particles come together, interact through a long-range massless scalar force like dilaton mediated and then disperse. Using worldl…
Flat limit of AdS/CFT from AdS geodesics: scattering amplitudes and antipodal matching of Liénard-Wiechert fields
Sarthak Duary, Shivam Upadhyay
We revisit the flat limit of AdS/CFT from the point of view of geodesics in AdS. We show that the flat space scattering amplitudes can be constructed from operator insertions where…
Spectral representation in Klein space: simplifying celestial leaf amplitudes
Sarthak Duary, Sourav Maji
In this paper, we explore the spectral representation in Klein space, which is the split signature flat spacetime. The Klein space can be foliated into Lorentzian $\mathrm{…
Flat limit of massless scalar scattering in
Sarthak Duary
We explore the flat limit of massless scalar scattering in . We derive the -matrix from the CFT -point function. We show a key property of…
AdS correction to the Faddeev-Kulish state: Migrating from the Flat Peninsula
Sarthak Duary
The IR finiteness of -matrix in flat spacetime is tied to the Faddeev-Kulish dressed state, which suggests dressing the Fock space scattering state with the soft photo…
Towards an IR finite S-matrix in the flat limit of AdS/CFT
Sarthak Duary, Eliot Hijano, Milan Patra
Asymptotic Fock spaces lead to IR divergences in S-matrices. The issue can be traced back to the assumption of asymptotic decoupling, and its relaxation leads to Faddeev-Kulish sta…
Celestial amplitude for 2d theory
Sarthak Duary
We explore celestial amplitude corresponding to bulk -matrix. We consider scalar particles with identical mass and show that the celestial amplitude becomes the f…
Adding Flavor to the Narain Ensemble
Shouvik Datta, Sarthak Duary, Per Kraus +2
We revisit the proposal that the ensemble average over free boson CFTs in two dimensions - parameterized by Narain's moduli space - is dual to an exotic theory of gravity in three…