Curriculum vitae

  
Education
======
* Ph.D in Department of Physical Sciences, IISER Mohali, 2024
     Thesis title: Quantum gravity with perfect fluid: ambiguities and their imprints 
     Supervisor: Kinjalk Lochan 
* M.Sc. in Department of Physics, Panjab University, Chandigarh, India, 2017
* B.Sc. in JCDAV College, Dasuya, Punjab, India

Work experience
======
* 2025--Present: Insitute Postdoctoral Fellow
   * Department of Physics 
     IIT Madras 
     Supervisor: Dawood Kothawala 
* 2024--Present: Research Associate
   * Department of Physics 
     IIT Delhi 
     Supervisor: Suprit Singh 

Publications
======
[1] Vikramaditya Mondal, Harkirat Singh Sahota, & Kinjalk Lochan, “Exact path integrals
    on half-line in quantum cosmology with a fluid clock and aspects of operator ordering
    ambiguity” JHEP 05, (2025) 128

[2] Harkirat Singh Sahota, & Kinjalk Lochan, “Are accelerated detectors sensitive to Planck
    scale changes?” Phys. Rev. D 111, (2025) 04, 045023

[3] Harkirat Singh Sahota, “Imprints of the operator ordering ambiguity on the dynamics
    of perfect fluid dominated quantum Universe”, Class. Quant. Grav. 41, 175006, (2024)

[4] Dipayan Mukherjee, & Harkirat Singh Sahota, “Einstein and Jordan frame correspon-
    dence in quantum cosmology: expansion-collapse duality” Eur. Phys. J. C 83, 803 (2023)

[5] Harkirat Singh Sahota, & Kinjalk Lochan, “Analyzing quantum gravity spillover in the
    semiclassical regime”, Eur. Phys. J. C 83, 1162 (2023)

[6] Harkirat Singh Sahota, & Kinjalk Lochan, “Infrared signatures of a quantum bounce
    in a minisuperspace analysis of Lemaître-Tolman-Bondi dust collapse” Phys. Rev. D 104,
    (2021) 12, 126027

Preprints
======
[1] Harkirat Singh Sahota, Dipayan Mukherjee, & S. Shankaranarayanan, “An exactly solvable model of quantum cosmology: the Hydrogen atom analogy with dust and cosmological constant”, arXiv:2505.16863

[2] Harkirat Singh Sahota, Suprit Singh, & Ashish Pandita, “Non-local correlations of a test quantum field in gravitational collapse”, arXiv:2505.04701

[3] Dipayan Mukherjee, Harkirat Singh Sahota, & Swati Gavas, “A dynamical systems perspective on the thermodynamics of late-time cosmology”, arXiv:2509.04964

Conference proceedings
======
[1] Harkirat Singh Sahota, & Kinjalk Lochan, “Infrared signatures of quantum bounce in collapsing
    geometry”, 16th Marcel Grossmann Meeting, pp. 4247-4255 (2023)

[2] Harkirat Singh Sahota, & Kinjalk Lochan, Operator ordering ambiguity in observables of quantum
    cosmology”, 16th Marcel Grossmann Meeting, pp. 538-547 (2023)

Presentations in Scientific Events
======
2025 • 33rd Indian Association for General Relativity and Gravitation Meeting (IAGRG 2025), 
       BITS Pilani, India
       Talk title: Are accelerated detectors sensitive to Planck scale changes?

2024 • National conference on classical and quantum gravity, 
       CUSAT Cochin, India
       Talk title: Quantum cosmology with perfect fluid: ambiguities and their imprints

2023 • Time and clocks, WE-Heraeus-Seminar, 
       Physikzentrum Bad Honnef, Germany
       Poster title :- Quantum cosmology with fluid clock: Implications for the dressed metric-
                       like approaches

     • 10th International Conference on Gravitation and Cosmology (ICGC 2023), IIT Guwahati, India 

       Talk title :- Analyzing quantum gravity spillover in the semiclassical regime

     • Workshop on “Observables in Quantum Gravity”, IISER Mohali, India
       Talk title :- Signatures of quantum gravity with perfect fluid

2021 • 16th Marcel Grossmann Meeting - MG16 (Virtual Meeting - July 2021),
       ICRA, Italy 
       Session :- Loop Quantum Gravity: Cosmology and Black Holes
       Talk title :- Infrared signatures of quantum bounce in collapsing geometry 
       
     • 16th Marcel Grossmann Meeting - MG16 (Virtual Meeting - July 2021), 
       ICRA, Italy 
       Session :- Extended Theories of Gravity and Quantum Cosmology 
       Talk title :- Operator Ordering Ambiguity in Observables of Quantum Cosmology

2020 • 31st meeting (Online) of the Indian Association for General Relativity and Gravitation
       (IAGRG 2020),
       IIT Gandhinagar, India 
       Talk title :- Infrared signature of quantum bounce in collapsing geometry
  
Teaching Assistance
======
2024-25 NPTEL noc25-ph10 (Foundations of quantum theory: Relativistic approach)
2022-23 PHY111: Physics Lab mechanics (Fall), PHY663: Relativistic cosmology (Spring)
2021-22 PHY 201 Waves and Optics (Fall)
2020-21 PHY301: Classical mechanics (Fall), PHY306: Advanced quantum mechanics (Spring)
2019-20 PHY111: Physics Lab mechanics (Fall), IDC 102: Hands-on electronics (Spring)
2018-19 IDC 102: Hands-on electronics (Spring)

Skills
======
* Programming Languages: Mathematica, C/C++, Python, Julia
* Operating systems: GNU/Linux, Windows
* Typesetting Software: LATEX