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Physics: Recent submissions

  • Phosphonium cation-based ferroelectric 1D halide perovskite-like semiconductor for mechanical energy harvesting 
    Pradhan, Prabhanjan; Kumar, Prabhat; Bandaru, Ravi Kumar; Dandela, Rambabu; Banerjee, Rupak; Patra, Biplab K. (American Chemical Society, 2024-11)
    Organic–inorganic halide perovskites (OIHPs) have attracted tremendous attention from researchers because of their diverse applications in optoelectronics, sensing, catalysis, memory, photodetectors, and medical diagnostics. ...
  • 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 (EDP Sciences, 2024-11)
    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] = ...
  • Addendum: variable brane tension and dark energy 
    Kumar, Naman (IOP Publishing Ltd., 2024-11)
    This article is an addendum to [2024 EPL 145 39001]. In the original article, we discussed how a variable brane tension could explain the late time cosmic acceleration of the universe. In this article, we extend the results ...
  • 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 ...
  • Growth of single crystalline GeSn alloy epilayer on Gd2O3/Si (111) engineered insulating substrate using RF sputtering and solid phase epitaxy 
    Singh, Dushyant; Tharundev V. V.; Maity, Subha; Gayakwad, Dhammapriy; Osten, H. Jorg; Lodha, Saurabh; Khiangte, Krista R. (Elsevier, 2025-01)
    The article showcases a low-cost, low-temperature deposition and HVM technique to develop single crystalline GeSn alloy epilayers on Gd2O3/Si (111) substrate. First, GeSn alloy amorphous layer is deposited on the insulating ...
  • 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, ...
  • Optical and x-ray studies of the Be/X-ray binary IGR J06074+2205 
    Chhotaray, Birendra; Naik, Sachindra; Jaisawal, Gaurava K.; Ahuja, Goldy (Oxford University Press, 2024-11)
    We present the results obtained from X-ray and optical analysis of the Be/X-ray binary IGR J06074+2205, focusing on before, during, and after the X-ray outbursts in 2023 October and December. The properties of the neutron ...
  • Exploring waveforms with non-GR deviations for extreme mass-ratio inspirals 
    Kumar, Shailesh; Singh, Rishabh Kumar; Chowdhuri, Abhishek; Bhattacharyya, Arpan (IOP Publishing, 2024-10)
    The fundamental process of detecting and examining the polarization modes of gravitational waves plays a pivotal role in enhancing our grasp on the precise mechanisms behind their generation. A thorough investigation is ...
  • 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 ...
  • Cloud-cloud collision: formation of hub-filament systems and associated gas kinematics. mass-collecting cone-a new signature of cloud-cloud collision 
    Maity, Arup Kumar; Inoue, T.; Fukui, Y.; Dewangan, L. K.; Sano, H.; Yamada, R. I.; Tachihara, K.; Bhadari, Naval Kishor; Jadhav, Omkar Ratan (American Astronomical Society, 2024-10)
    Massive star-forming regions (MSFRs) are commonly associated with hub-filament systems (HFSs) and sites of cloud–cloud collision (CCC). Recent observational studies of some MSFRs suggest a possible connection between CCC ...
  • 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 ...
  • Revisiting lunar dust charging and dynamics 
    Sana, Trinesh; Mishra, S. K. (American Institute of Physics, 2024-10)
    Under the dynamic influence of near-surface plasma, intricate dynamics of lunar dust have been observed during the Surveyors and Apollo missions in the form of Lunar horizontal glow. These dynamics are primarily driven by ...
  • 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. ...
  • Exact diagonalization using hierarchical wave functions and calculation of topological entanglement entropy 
    Gaur, Deepak; Sable, Hrushikesh; Angom, D. (American Physical Society, 2024-10)
    In this work we describe a technique for numerical exact diagonalization. The method is particularly suitable for cold bosonic atoms in optical lattices, in which multiple atoms can occupy a lattice site. We describe the ...
  • Spatial variability in residence time of Beryllium in the Indian Ocean 
    Jena, Partha Sarathi; Bhushan, Ravi; Jena, Sanjit Kumar; Ajay, Shivam; Sudheer, A. K. (Elsevier, 2024-12)
    Residence time of an element in the ocean is a consequence of its chemical behaviour and the various biogeochemical processes governing its distribution, sources, and sinks. Precise estimation of the residence time of ...
  • Investigating device-independent quantum random number generation 
    Mongia, Vardaan; Kumar, Abhishek; Prabhakar, Shashi; Banerji, Anindya; Singh, R. P. (Elsevier, 2024-11)
    Quantum random number generation (QRNG) is a resource that is a necessity in the field of cryptography. However, its certification has been challenging. In this article, we certify randomness with the aid of quantum ...
  • Signature of a zonally symmetric semidiurnal tide during major sudden stratospheric warmings and plausible mechanisms: a case study 
    Mitra, Gourav; Guharay, Amitava; Paulino, I. (Nature Research, 2024-10)
    Sudden Stratospheric Warming (SSW) is a winter phenomenon initiated primarily by the enhanced stationary planetary waves (SPWs), characterized by an increase in polar stratospheric temperature by a few tens of kelvin for ...
  • Restoring causality in higher curvature gravity 
    Edelstein, Jose D.; Ghosh, Rajes; Laddha, Alok; Sarkar, Sudipta (Cornell University Library, 2024-09)

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