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Physics: Recent submissions

  • Free space continuous variable quantum key distribution with discrete phases 
    Rani, Anju; Chandravanshi, Pooja; Ramakrishnan, Jayanth; Vaity, Pravin; Madhusudhan, P.; Sharma, Tanya; Bhardwaj, Pranav; Biswas, Ayan; Singh, R. P. (Cornell University Library, 2023-05)
    Quantum Key Distribution (QKD) offers unconditional security in principle. Many QKD protocols have been proposed and demonstrated to ensure secure communication between two authenticated users. Continuous variable (CV) QKD ...
  • Optimizing the cut and count method in phenomenological studies 
    Coleppa, Baradhwaj; Krishna, Gokul B.; Sarkar, Agnivo; Shil, Sujay (Cornell University Library, 2023-05)
    We introduce an optimization technique to discriminate signal and background in any phenomenological study based on the cut and count-based method. The core ideas behind this algorithm is the introduction of a ranking ...
  • Quantum state complexity meets many-body scars 
    Nandy, Sourav; Mukherjee, Bhaskar; Bhattacharyya, Arpan; Banerjee, Aritra (Cornell University Library, 2023-05)
    Scar eigenstates in a many-body system refers to a small subset of non-thermal finite energy density eigenstates embedded into an otherwise thermal spectrum. This novel non-thermal behaviour has been seen in recent experiments ...
  • Test of new physics effects in B¯→(D(∗),π)ℓ-ν¯ℓ decays with heavy and light leptons 
    Ray, Ipsita; Nandi, Soumitra (Cornell University Library, 2023-05)
    We study the B¯→D(D∗)ℓ-ν¯ℓ decays based on the up-to-date available inputs from experiments and the lattice. First, we review the standard model (SM) predictions of the different observables associated with these decay ...
  • Traversable wormholes in bi-metric gravity 
    Rahman, Mostafizur; Sen, Anjan A.; Bohra, Sunil Singh (Cornell University Library, 2023-05)
    The ghost-free bi-metric gravity theory is a viable theory of gravity that explores the interaction between a massless and a massive graviton and can be described in terms of two dynamical metrics. In this paper, we present ...
  • Decoherence, entanglement negativity, and circuit complexity for an open quantum system 
    Bhattacharyya, Arpan; Hanif, Tanvir; Haque, S. Shajidul; Paul, Arpon (American Physical Society, 2023-05)
    In this paper, we compare the saturation timescales for complexity, linear entropy, and entanglement negativity for two open quantum systems. Our first model is a coupled harmonic oscillator, where we treat one of the ...
  • Quantum gravity fluctuations in the timelike Raychaudhuri equation 
    Bak, Sang-Eon; Parikh, Maulik; Sarkar, Sudipta; Setti, Francesco (Springer, 2023-06)
    We consider a timelike geodesic congruence in the presence of perturbative quantum fluctuations of the spacetime metric. We calculate the change in the volume of a bundle of geodesics due to such fluctuations and thereby ...
  • Depletion-driven antiferromagnetic, paramagnetic, and ferromagnetic behavior in quasi-two-dimensional buckled colloidal solids 
    Hill, Analisa; Tanaka, Michio; Aptowicz, Kevin B.; Mishra, Chandan K.; Yodh, A. G.; Ma, Xiaoguang (American Institute of Physics, 2023-05)
    We investigate quasi-two-dimensional buckled colloidal monolayers on a triangular lattice with tunable depletion interactions. Without depletion attraction, the experimental system provides a colloidal analog of the ...
  • Sources, supply, and seasonality of total suspended matter and associated organic carbon and total nitrogen in three large Asian rivers-Ganges, Mekong, and Yellow 
    Sarkar, Siddhartha; Verma, Sangeeta; Begum, Most Shirina; Park, Ji-Hyung; Kumar, Sanjeev (Frontiers Media, 2023-05)
    Asian rivers, covering ∼29% of the global river surface area, account for ∼35% of the global freshwater discharge and transport a disproportionately large flux (∼70%) of total suspended matter to the oceans. With recent ...
  • The outer spiral arm of the Milky Way using red clump stars - tracing the asymmetry across the disc 
    Uppal, Namita; Ganesh, Shashikiran; Schultheis, Mathias (EDP Sciences, 2023-05)
    Aims. Our aim is to provide an observational view of the old disc structure of the Milky Way galaxy using the distribution of red clump (RC) stars. The spiral arms, warp structure, and other asymmetries present in the disc ...
  • Charged Higgs prospects in extended gauge models 
    Coleppa, Baradhwaj; Krishna, Gokul B.; Sarkar, Agnivo (SpringerOpen, 2023-05)
    In this paper, we explore the collider phenomenology of charged Higgs bosons in the context of a generic Beyond Standard Model scenario with extended gauge and scalar sectors. In such scenarios, the charged Higgs boson can ...
  • On the propagation of gravity waves in the lower solar atmosphere in different magnetic configurations 
    Kumar, Hirdesh; Kumar, Brajesh; Rajaguru, S. P. (Elsevier, 2023-05)
    Gravity waves are generated by turbulent subsurface convection overshooting or penetrating locally into a stably stratified medium. While propagating energy upwards, their characteristic negative phase shift over height ...
  • On the propagation of gravity waves in the lower solar atmosphere in different magnetic configurations 
    Kumar, Hirdesh; Kumar, Brajesh; Rajaguru, S. P. (Cornell University Library, 2023-05)
    Gravity waves are generated by turbulent subsurface convection overshooting or penetrating locally into a stably stratified medium. While propagating energy upwards, their characteristic negative phase shift over height ...
  • Activity induced diffusion recovery in crowded colloidal suspension 
    Maiti, Arnab; Koyano, Yuki; Kitahata, Hiroyuki; Dey, Krishna Kanti (Cornell University Library, 2023-05)
    We show that the force generated by active enzyme molecules are strong enough to influence the dynamics of their surroundings under artificial crowded environments. We measured the behavior of polymer microparticles in a ...
  • Microbubbles as self-propelling motors 
    Dhara, Palash; Shah, Niyati; Maiti, Arnab; Moinuddin, Md; Rane, Kaustubh; Dey, Krishna Kanti (ChemRxiv.org, 2023-04)
    Self-powered active micro/nanomotors have gained significant research attention in the scientific community due to their unique dynamics and emergent behaviors in response to various external stimuli. In recent years, ...
  • Perturbing the perturbed: stability of quasi-normal modes in presence of a positive cosmological constant 
    Sarkar, Subhodeep; Rahman, Mostafizur; Chakraborty, Sumanta (Cornell University Library, 2023-04)
    In this work, we wish to address the question -- whether the quasi-normal modes, the characteristic frequencies associated with perturbed black hole spacetimes, central to the stability of these black holes, are themselves ...
  • Real-time sensing of static displacement and vibrations using HOM interference based quantum sensor 
    Singh, Sandeep; Kumar, Vimlesh; Sharma, Varun; Faccio, Daniele; Samanta, G. K. (Cornell University Library, 2023-04)
    Hong-Ou-Mandel (HOM) interference, bunching of two indistinguishable photons on a balanced beam-splitter, has emerged as a promising tool for quantum sensing. The interference dip-width, thus the spectral-bandwidth of ...
  • Comprehensive multiphase chlorine chemistry in the box model CAABA/MECCA: implications to atmospheric oxidative capacity 
    Soni, Meghna; Sander, Rolf; Sahu, Lokesh K.; Taraborrelli, Domenico; Liu, Pengfei; Patel, Ankit; Girach, Imran A.; Pozzer, Andrea; Gunthe, Sachin S.; Ojha, Narendra (Copernicus Publications, 2023-04)
    Abstract. Tropospheric chlorine chemistry can strongly impact the atmospheric oxidation capacity and composition, especially in urban environments. To account for these reactions, the gas- and aqueous-phase Cl chemistry ...
  • Multi-epoch hard X-ray view of compton-thick AGN circinus galaxy 
    Kayal, Abhijit; Singh, Veeresh; Ricci, Claudio; Mithun, N. P. S.; Vadawale, Santosh; Dewangan, Gulab; Gandhi, Poshak (Cornell University Library, 2023-04)
    The circumnuclear material around Active Galactic Nuclei (AGN) is one of the essential components of the obscuration-based unification model. However, our understanding of the circumnuclear material in terms of its geometrical ...
  • Study of reconnection dynamics and plasma relaxation in MHD simulation of a solar flare 
    Agarwal, Satyam; Bhattacharyya, Ramit; Yang, Shangbin (Research Square Company, 2023-04)
    Self-organization in continuous systems is associated with dissipative processes. In particular, for magnetized plasmas, it is known as magnetic relaxation, where the magnetic energy is converted into heat and kinetic ...

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