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E-print Articles: Recent submissions

  • Gravitational waves from regular black holes in extreme mass-ratio inspirals 
    Kumar, Shailesh; Zi, Tieguang (Cornell University Library, 2024-12)
    We analyze a rotating regular black hole spacetime with an asymptotically Minkowski core, focusing on extreme mass-ratio inspiral (EMRIs) where a stellar-mass object inspirals a supermassive black hole under consideration. ...
  • Dynamics of hot QCD matter 2024 - bulk properties 
    Singh, Sunny Kumar; Chandra, Vinod (Cornell University Library, 2024-12)
    The second Hot QCD Matter 2024 conference at IIT Mandi focused on various ongoing topics in high-energy heavy-ion collisions, encompassing theoretical and experimental perspectives. This proceedings volume includes 19 ...
  • Probing spacetime symmetries using gravitational wave ringdown 
    Ghosh, Rajes; Mishra, Akash K.; Sarkar, Sudipta (Cornell University Library, 2024-12)
    The uniqueness and rigidity theorems assert that the asymptotically flat, vacuum, stationary rotating black hole solution in general relativity must be the Kerr solution, exhibiting novel symmetries such as axisymmetry and ...
  • Passive polarization-encoded BB84 protocol using a heralded single-photon source 
    Rani, Anju; Mongia, Vardaan; Parvatikar, Parvatesh; Gharate, Rutuj; Sharma, Tanya; Ramakrishnan, Jayanth; Chandravanshi, Pooja; Singh, R. P. (Cornell University Library, 2024-12)
    The BB84 quantum key distribution protocol set the foundation for achieving secure quantum communication. Since its inception, significant advancements have aimed to overcome experimental challenges and enhance security. ...
  • Mon R2: a hub-filament system with an infrared bubble at the hub center 
    Dewangan, L. K.; Bhadari, N. K.; Maity, Arup Kumar; Jadhav, Omkar Ratan; Sharma, Saurabh; Ismail, A. Haj (Cornell University Library, 2024-12)
    A multi-wavelength, multi-scale study of the Mon R2 hub-filament system (HFS) reveals a spiral structure, with the central hub containing more mass than its filaments. ALMA C18O(1-0) emission reveals several accreting ...
  • Probing dark matter halo profiles with multi-band observations of gravitational waves 
    Tayelyani, Divya; Bhattacharyya, Arpan; Sengupta, Anand S. (Cornell University Library, 2024-11)
    In this paper, we evaluate the potential of multiband gravitational wave observations to constrain the properties of static dark matter spikes around intermediate-mass ratio inspirals. The influence of dark matter on the ...
  • On the influence of the solar wind on the propagation of Earth-impacting coronal mass ejections 
    Kumar, Sandeep; Srivastava, Nandita; Gopalswamy, Nat; Dash, Ashutosh (Cornell University Library, 2024-11)
    Coronal Mass Ejections (CMEs) are subject to changes in their direction of propagation, tilt, and other properties as they interact with the variable solar wind. We investigated the heliospheric propagation of 15 Earth-impacting ...
  • Collective dissipation of oscillator dipoles strongly coupled to 1-D electromagnetic reservoirs 
    Guha, Subhasish; Bar, Ipsita; Agarwalla, Bijay Kumar; Venkatesh, B. Prasanna (Cornell University Library, 2024-11)
    We study the collective dissipative dynamics of dipoles modeled as harmonic oscillators coupled to 1-D electromagnetic reservoirs. The bosonic nature of the dipole oscillators as well as the reservoir modes allows an exact ...
  • Relativistic fluid dynamics in a 'hydro' frame 
    Bhattacharyya, Sayantani; Mitra, Sukanya; Roy, Shuvayu; Singh, Rajeev (Cornell University Library, 2024-10)
    In this letter, we investigate how field redefinition influences the spectrum of linearized perturbations in relativistic fluid dynamics. We show that the hydrodynamic modes do not get affected under local field redefinition, ...
  • Benchmarking quantum chaos from geometric complexity 
    Bhattacharyya, Arpan; Brahma, Suddhasattwa; Chowdhury, Satyaki; Luo, Xiancong (Cornell University Library, 2024-10)
    Recent studies have shown that there is a strong interplay between quantum complexity and quantum chaos. In this work, we consider a new method to study geometric complexity for interacting non-Gaussian quantum mechanical ...
  • Probing deviations to Kerr geometry with extreme mass-ratio inspirals 
    Kumar, Shailesh (Cornell University Library, 2024-10)
    One of the primary research aims of the Laser Interferometer Space Antenna (LISA) mission is to comprehensively map the Kerr spacetime, a fundamental pursuit in the realm of general relativity. To achieve this goal, it is ...
  • Beamsplitter-free, high bit-rate, quantum random number generator based on temporal and spatial correlations of heralded single-photons 
    Nai, Ayan Kumar; Sharma, Amritash; Kumar, Vimlesh; Singh, Sandeep; Mishra, Shreya; Chandrashekar, C. M.; Samanta, G. K. (Cornell University Library, 2024-10)
    The spontaneous parametric down-conversion (SPDC), an inherently random quantum process, produces a non-deterministic photon-pair with strong temporal and spatial correlations owing to both energy and momentum conservation. ...
  • Inflationary gravitational wave spectral shapes as test for low-scale leptogenesis 
    Borboruah, Zafri A.; Ghosha, Anish; Malhotra, Lekhika; Yajnik, Urjit A. (Cornell University Library, 2024-05)
    We study thermal and non-thermal resonant leptogenesis in a general setting where a heavy scalar ϕ decays to right-handed neutrinos (RHNs) whose further out-of-equilibrium decay generates the required lepton asymmetry. ...
  • Restoring causality in higher curvature gravity 
    Edelstein, Jose D.; Ghosh, Rajes; Laddha, Alok; Sarkar, Sudipta (Cornell University Library, 2024-09)
  • Accelerated parameter estimation of supermassive black hole binaries in LISA using meshfree approximation 
    Sharma, Abhishek; Sengupta, Anand S.; Mukherjee, Suvodip (Cornell University Library, 2024-09)
    The Laser Interferometer Space Antenna (LISA) will be capable of detecting gravitational waves (GWs) in the milli-Hertz band. Among various sources, LISA will detect the coalescence of supermassive black hole binaries ...
  • Eccentric extreme mass-ratio inspirals: a gateway to probe quantum gravity effects 
    Zi, Tieguang; Kumar, Shailesh (Cornell University Library, 2024-09)
    We examine a loop quantum gravity (LQG) inspired rotating black hole, treating it as a central supermassive black hole (SMBH) in an extreme mass-ratio inspiral (EMRI) system, where an inspiralling object exhibits eccentric ...
  • A theory of gravity in Minkowski space 
    Kumar, Naman (MDPI, 2024-09)
    In this paper, we present a theory of gravity in Minkowski space. The basic idea is that the presence of mass affects the worldline of particles in the flat Minkowski background. Although General Relativity is in complete ...
  • Discovery and characterization of a dense sub-Saturn TOI-6651b 
    Baliwal, Sanjay; Sharma, Rishikesh; Chakraborty, Abhijit; Khandelwal, Akanksha; Nikitha, K. J.; Safonov, Boris S.; Strakhov, Ivan A.; Montalto, Marco; Eastman, Jason D.; Latham, David W.; Bieryla, Allyson; Prasad, Neelam J. S. S. V.; Bharadwaj, Kapil K.; Lad, Kevikumar A.; Das, Shubhendra N.; Nayak, Ashirbad (Cornell University Library, 2024-08)
    We report the discovery and characterization of a transiting sub-Saturn exoplanet TOI-6651b using PARAS-2 spectroscopic observations. The host, TOI-6651 (mV≈10.2), is a sub-giant, metal-rich G-type star with [Fe/H]=0.225 ...
  • Explaining 95 (or so) GeV anomalies in the 2-Higgs doublet model type-I 
    Khanna, Akshat; Moretti, Stefano; Sarkar, Agnivo (Cornell University Library, 2024-09)
    We show how the 2-Higgs Doublet Model (2HDM) Type-I can explain some excesses recently seen at the Large Hadron Collider (LHC) in γγ and τ+τ− final states in turn matching Large Electron Positron (LEP) data in bb¯ signatures, ...
  • Talbot effect-based sensor measuring grating period change in subwavelength range 
    Sarkar, Saumya J.; Ebrahim-Zadeh, M.; Samanta, G. K. (Cornell University Library, 2024-08)
    Talbot length, the distance between two consecutive self-image planes along the propagation axis for a periodic diffraction object (grating) illuminated by a plane wave, depends on the period of the object and the wavelength ...

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