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Browsing BITS Faculty Publications by Author "Banerjee, Aritra"

Browsing BITS Faculty Publications by Author "Banerjee, Aritra"

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  • Beyond Wilson? Carroll from current deformations 
    Banerjee, Aritra (Springer, 2024)
    At extreme energies, both low and high, the spacetime symmetries of relativistic quantum field theories (QFTs) are expected to change with Galilean symmetries emerging in the very low energy domain and, as we will argue, ...
  • Boosting to BMS 
    Banerjee, Aritra (Springer, 2022-09)
    Bondi-Metzner-Sachs (BMS) symmetries, or equivalently Conformal Carroll symmetries, are intrinsically associated to null manifolds and in two dimensions can be obtained as an Inönü-Wigner contraction of the two-dimensional ...
  • Bootstrapping the Kronig-Penney Model 
    Banerjee, Aritra (APS, 2022-12)
    Recently, bootstrap methods from conformal field theory have been adapted for studying the energy spectrum of various quantum mechanical systems. In this paper, we consider the application of these methods in obtaining the ...
  • Carroll covariant scalar fields in two dimensions 
    Banerjee, Aritra (Springer, 2023-01)
    Conformal Carroll symmetry generically arises on null manifolds and is important for holography of asymptotically flat spacetimes, generic black hole horizons and tensionless strings. In this paper, we focus on two dimensional ...
  • Carroll fermions in two dimensions 
    Banerjee, Aritra (APS, 2023-06)
    Carroll symmetry is a very powerful characteristic of generic null surfaces, as it replaces the usual Poincaré algebra with a vanishing speed of light version thereof. These symmetries have found universal applications in ...
  • Cosmography and flat Λ⁢CDM tensions at high redshift 
    Banerjee, Aritra (APS, 2020-12)
    Risaliti, Lusso, and collaborators have constructed a high-redshift Hubble diagram of supernovae (SNe), quasars (QSO), and gamma-ray bursts (GRBs) that shows a “∼4⁢𝜎 tension with the Λ⁢CDM model” based on a log polynomial ...
  • D1 string dynamics in curved backgrounds with fluxes 
    Banerjee, Aritra (Springer, 2016)
    We study various rotating and oscillating D-string configurations in some general backgrounds with fluxes. In particular, we look for solutions to the equations of motion of various rigidly rotating D-strings in AdS3 ...
  • Ehlers transformations as EM duality in the double copy 
    Banerjee, Aritra (APS, 2020-12)
    Given a solution to 4D Einstein gravity with an isometry direction, it is known that the equations of motion are identical to those of a 3D 𝜎 model with target space geometry 𝑆⁢𝑈⁡(1,1)/𝑈⁡(1). Thus, any transformation ...
  • Entanglement entropy for TT deformed CFT in general dimensions 
    Banerjee, Aritra (Elsevier, 2019-11)
    We consider deformation of a generic d dimensional () large-N CFT on a sphere by a spin-0 operator which is bilinear in the components of the stress tensor. Such a deformation has been proposed to be holographically dual ...
  • Exotic origins of tensionless superstrings 
    Banerjee, Aritra (Elsevier, 2020-02)
    A new type of tensionless superstring theory, called the Inhomogeneous tensionless superstring, has been recently introduced. This is characterised by a residual symmetry algebra on the worldsheet richer in structure than ...
  • Fast spinning strings on η deformed AdS5 × S5 
    Banerjee, Aritra (Springer, 2018-02)
    In this paper, considering the correspondence between spin chains and string sigma models, we explore the rotating string solutions over η deformed AdS5 × S5 in the so-called fast spinning limit. In our analysis, we focus ...
  • From CFTs to theories with Bondi-Metzner-Sachs symmetries: Complexity and out-of-time-ordered correlators 
    Banerjee, Aritra (2022-03)
    We probe the contraction from 2d relativistic CFTs to theories with Bondi-Metzner-Sachs (BMS) symmetries, or equivalently Conformal Carroll symmetries, using diagnostics of quantum chaos. Starting from an Ultrarelativistic ...
  • Hubble sinks in the low-redshift swampland 
    Banerjee, Aritra (APS, 2021)
    Local determinations of the Hubble constant 𝐻0 favor a higher value than Planck based on cosmic microwave background and Λ cold dark matter (Λ⁢CDM). Through a model-independent expansion, we show that low redshift (𝑧≲0.7) ...
  • Inhomogeneous Tensionless Superstrings 
    Banerjee, Aritra (Springer, 2018-02)
    We construct a novel tensionless limit of Superstring theory that realises the Inhomogeneous Super Galilean Conformal Algebra (SGCA I ) as the residual symmetry in the analogue of the conformal gauge, as opposed to previous ...
  • Magic Fermions: Carroll and Flat Bands 
    Banerjee, Aritra (Springer, 2023-03)
    The Carroll algebra is constructed as the c → 0 limit of the Poincare algebra and is associated to symmetries on generic null surfaces. In this paper, we begin investigations of Carrollian fermions or fermions defined on ...
  • ModMax meets GCA 
    Banerjee, Aritra (2022-06)
    A maximally symmetric non-linear extension of Maxwell's theory in four dimensions called ModMax has been recently introduced in the literature. This theory preserves both electromagnetic duality and conformal invariance ...
  • Multi-spike strings in AdS3 with mixed three-form fluxes 
    Banerjee, Aritra (Springer, 2016-05)
    The string sigma model in AdS3 ×S 3 supported by mixed three-form fluxes has recently been proved to be integrable which led to a plethora of work in this background including proposals for S matrix and study of semiclassical ...
  • A note on oscillating strings in AdS3×S3 with mixed three-form fluxes 
    Banerjee, Aritra (Springer, 2015)
    We present a detailed study of the pulsating string solutions in AdS3 × S 3 supported by both RR and NS-NS fluxes. This background has recently been proved to be integrable. We find the dispersion relation between the ...
  • On circular strings in (AdS3 ×S3)_k , Aritra Banerje 
    Banerjee, Aritra (Springer, 2016)
    The so called one-parameter (often called ϰ) deformed AdS string sigma models have attracted a lot of attention lately in the study of integrability in string theory. We construct various circular string solutions in the ...
  • On interpolating anomalous dimension of twist-two operators with general spins 
    Banerjee, Aritra (Springer, 2019-07)
    We study non-perturbative interpolating functions to probe the physics of anomalous dimensions associated with twist-two operators in SYM of finite and infinite spin. Compared to previous studies, the novel result of this ...

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