K. Sreeman Reddy


You can also see this list on my CV.

List of projects and reports
Quantum covariant bit threads (Oct 2023-Present)

Supervisor: Prof. Matthew Headrick, Dept. of Physics, Brandeis University

  • Studied several papers about the bit thread formulation of holographic entanglement entropy, especially ”Quantum bit threads” (2105.08072) and ”Covariant bit threads” (2208.10507)
  • Proposed a definition for ”Quantum covariant bit threads” that unifies the quantum static version 2105.08072 with the classical covariant version 2208.10507 and showed that it has the expected properties.
  • Currently trying to prove that this definition is equivalent to the Quantum Extremal Surface (QES) prescription.
Sparse Double-Scaled SYK (Oct 2023-Present)

Supervisor: Prof. Brian Swingle, Dept. of Physics, Brandeis University

  • Studied the chord diagram technique that can be used to solve Double Scaled SYK at all energy scales and $\lambda$.
  • Studied the sparse version of SYK.
  • Currently working on sparsifying the Double Scaled SYK. We are developing hyperchord diagram technique for calculating next-order corrections to sparse DSSYK, and I am also working on sparsifying ${\mathcal N} = 1$ and ${\mathcal N} = 2$ supersymmetric DSSYK.
Holographic description of M-theory (Nov-Dec 2023)

Supervisor: Prof. Daniel Jafferis, Dept. of Physics, Harvard University

  • Studied the duality between $AdS_{4}\times S^{7}/\mathbb{Z}_{k}$ M-theory and the $\mathcal N = 6$ $U(N)_k \times U(N)_{-k}$ super Chern–Simons theory (ABJM CFT).
  • Gave a presentation focusing on the M2-brane construction and obtaining the gravity dual.
AdS/CFT correspondence and the information paradox (Aug-Nov 2022)

Supervisor: Prof. Pichai Ramadevi, Dept. of Physics, IIT Bombay

  • Studied the AdS/CFT correspondence (with a focus on black hole thermodynamics) from a textbook by Năstase.
  • Studied several review articles related to the holographic entanglement entropy.
  • Read recent papers on the resolution of the information paradox using the Island prescription.
  • After reading recent papers on islands in de Sitter spacetimes, started working on a related research problem.
    Quantum Raychaudhuri Equation and its applications to cosmology (May-July 2022)

Supervisor: Prof. Saurya Das, Dept. of Physics and Astronomy, University of Lethbridge, Canada

  • Studied a semi-classical gravity theory obtained by replacing classical geodesics in the Raychaudhuri equation with Bohmian trajectories.
  • Studied a cosmological model within this theory where both dark matter and dark energy are unified into a dark Bose-Einstein condensate.
  • Implemented a special case of this theory in CLASS and estimated the cosmological parameters by doing Monte Carlo sampling in Cobaya using Planck 2018 data.
Black hole information paradox (June-November 2021)

Supervisor: Prof. Vikram Rentala, Dept. of Physics, IIT Bombay

  • Studied quantum scalar field theory in curved spacetime and how it compares with QFT in flat spacetime.
  • Reviewed the four laws of black hole mechanics and their similarity with thermodynamics and Penrose process in a Kerr black hole.
  • Studied Unruh effect which explains that the vacuum state of a Minkowski observer will be a thermal state as observed by a Rindler observer and how entanglement between the left and right Rindler wedges prevents a firewall at the Rindler horizon.
  • Studied Hawking radiation and the conditions under which a black hole can be in stable or unstable equilibrium.
  • Assuming that the evaporation is unitary, studied the characteristics of Page curve using the Page theorem.
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Higgs mechanism (April 2022)

Supervisor: Prof. Urjit Yajnik, Dept. of Physics, IIT Bombay

  • Studied how abelian and non-abelian gauge bosons can become massive using spontaneous symmetry breaking.
  • Studied how the theory is renormalizable even after gauge bosons acquire mass through Higgs mechanism using $R_\xi$ gauges.
Category theory applications in physics (October-November 2020)

Supervisor: Prof. Vikram Rentala, Dept. of Physics, IIT Bombay

  • Studied basic concepts of category theory like Functors, Natural transformations, Monoidal categories.
  • Studied axiomatization of physical systems using strict monoidal categories. \item Investigated FdHilb category and studied no-cloning, no-deleting theorems in categorical quantum mechanics.
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One-dimensional photonic bound states in the continuum (March-April 2021)

Supervisor: Prof. Anshuman Kumar, Dept. of Physics, IIT Bombay

  • Studied bound states in the continuum (BICs) which emerge due to precise destructive interference of waves for an electron in a one-dimensional quantum well under an external magnetic field.
  • Using the correspondence between the spin states of the above electron model and the polarisation states of an one dimensional photonic system made up of an anisotropic layer conjugated with a 1D photonic crystals consisting of alternating layers, found BICs for the photonic system.
  • Calculated numerical values and generated graphs of several quantities such as transmittance, reflectance, Q factor, wave function using python for both the electron model and the photonic model.
Covid-19:analysis of a modified SEIR model (October-November 2020)

Supervisor: Prof. Amitabha Nandi, Dept. of Physics, IIT Bombay

  • Studied the normal Susceptible-Exposed-Infected-Recovered (SEIR) model. Later used a modified model to incorporates the fact that asymptomatic or mildly symptomatic individuals play a significant role in the transmission of Covid-19.
  • Generated different projections for India under different intervention parameters.
  • By varying intervention parameters in the modified model we concluded that testing-quarantining is more efficient in controlling the pandemic than lockdowns.
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