Article
Astronomy & Astrophysics
Sukanta Bhattacharyya, Sunandan Gangopadhyay
Summary: This paper investigates the impact of the generalized uncertainty principle on the motion of particles in gravitational quantum phenomena, studying their behavior under the most general form of GUP using the path integral representation. By analyzing the upper limit of velocity and the relationship between GUP parameters, the mathematical expressions for classical action and quantum fluctuations of free particles and harmonic oscillator systems are derived.
Article
Astronomy & Astrophysics
A. Ahmadain, I Klich
Summary: By extending the background metric optimization procedure to a Lifshitz field theory, optimal geometries for static and dynamic correlation functions were found. The results suggest that a MERA-like tensor network may still be considered an optimal background spacetime configuration for the numerical description of this system, despite not starting with a conformal field theory.
Article
Physics, Multidisciplinary
Matteo Ciardi, Tommaso Macri, Fabio Cinti
Summary: This work explores methodology for investigating interacting systems with contact interactions, introducing a class of zonal estimators for path-integral Monte Carlo methods aimed at providing physical information about limited regions of inhomogeneous systems. The usefulness of zonal estimators is demonstrated through their application to a system of trapped bosons in a quasiperiodic potential in two dimensions, focusing on finite temperature properties across a wide range of potential values. Finally, the generalization of such estimators to local fluctuations of particle numbers and magnetic ordering in multi-component systems, spin systems, and systems with nonlocal interactions is discussed.
Article
Astronomy & Astrophysics
Gerald V. Dunne, Zachary Harris
Summary: This article demonstrates how the nonperturbative structure of the effective action is modified by background field inhomogeneities. The simple Borel poles of the Euler-Heisenberg effective action turn into branch points, and new branch points appear, indicating new nonperturbative effects. This information is encoded in the perturbative weak field expansion and becomes significant for strongly inhomogeneous fields. The article also shows that resurgent extrapolation methods allow the extraction of a significant amount of nonperturbative information from a relatively small perturbative input, enabling accurate analytic continuations from weak field to strong field and from spatially dependent magnetic background to time dependent electric background. These extrapolations are superior to standard Wentzel-Kramers-Brillouin approximation and locally constant-field approximations.
Article
Physics, Multidisciplinary
Hyunsoo Ha, Alan Morningstar, David A. Huse
Summary: Many-body localized (MBL) systems cannot reach thermal equilibrium under their own dynamics, even though they are interacting, nonintegrable, and in an extensively excited state. One instability toward thermalization of MBL systems is the avalanche, where a locally thermalizing rare region is able to spread thermalization through the full system. We find a detailed connection between many-body resonances and avalanches in MBL systems.
PHYSICAL REVIEW LETTERS
(2023)
Article
Computer Science, Information Systems
Jung-Heum Park
Summary: This paper discusses the problem of finding disjoint paths in the underlying graph of an interconnection network in parallel processing. It reveals that constructing a nonbipartite torus-like graph with good disjoint-path-cover properties from lower dimensional torus-like graphs can retain the good property. Consequently, nonbipartite tori with at most f vertex and/or edge faults can have unpaired many-to-many disjoint path covers joining arbitrary disjoint sets.
Article
Physics, Fluids & Plasmas
Michael-Adan Martinez-Sanchez, Cesar Martinez-Flores, Rubicelia Vargas, Jorge Garza, Remigio Cabrera-Trujillo, K. D. Sen
Summary: This study focuses on solving the Hartree-Fock equations for many-electron atoms using different plasma models, verifying the reliability of the method through experiments on two-electron atoms and obtaining consistent results. By investigating the variation of chemical reaction energy with screening length under different plasma conditions, as well as the impact of electron correlation energy, a rational explanation for the variation of correlation energy under different plasma potentials is provided.
Article
Physics, Applied
Xindong Wang, Hai-Ping Cheng
Summary: A self-consistent effective Hamiltonian theory was developed for fermionic many-body system using a separable many-body variational wavefunction. The theory was applied to the 2D Hubbard model and a highly unconventional quadruple-fermion non-Cooper pair order parameter was discovered, showcasing its computational effectiveness.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2021)
Article
History & Philosophy Of Science
David Glick
Summary: The principle of least action (PLA) is often seen as contradicting the dominant causal explanation in physics with its appeal to final causes. However, it has been argued that this implication no longer holds as PLA can be derived from quantum theory. This paper argues that the metaphysical implications of PLA-based explanations remain valid and that PLA functions as a diachronic constraint allowing for non-causal explanations.
Article
Economics
Maximilian Benner
Summary: This article explores how agents shape innovation systems and highlights the unclear distinction and underdeveloped links between system-level agency and other levels of agency. It also points out the vagueness about the conceptualization of a multidimensional innovation system and the limited understanding of the outcomes of agentic processes. The article provides a critique, suggests ideas for a nuanced multilevel agency conceptualization, and proposes a research agenda to bridge the gaps in understanding the impact of system-level agency on path development.
Article
Astronomy & Astrophysics
Aleksandar Mikovic
Summary: In this study, we review the construction of the path integral and the corresponding effective action for the Regge formulation of General Relativity. We assume that the short-distance structure of the spacetime is not a smooth 4-manifold, but a piecewise linear manifold based on a triangulation of a smooth 4-manifold. We find that the exponentially damped 4-volume path-integral measure does not yield a finite path integral, but it can be used for the construction of the perturbative effective action. By modifying the 4-volume measure, multiplying it by an inverse power of the product of the edge-lengths, we obtain a new measure that gives a finite path integral while retaining all the nice features of the unmodified measure.
Article
Thermodynamics
Yi He, Su Guo, Jianxu Zhou, Feng Wu, Jing Huang, Huanjin Pei
Summary: The proposed wind-photovoltaic-thermal energy storage-electric heater cogeneration system effectively addresses the fluctuating wind and photovoltaic output, and optimizes objectives, capacity optimization problem, and the performance comparison of many-objective algorithms. The system is feasible and cost-effective for practical applications.
Article
Materials Science, Multidisciplinary
Alan Morningstar, Luis Colmenarez, Vedika Khemani, David J. Luitz, David A. Huse
Summary: In this study, we numerically investigate the avalanche instability and many-body resonances in strongly disordered spin chains exhibiting many-body localization (MBL). We find that finite-size systems behave like MBL within the MBL regimes, and we identify landmarks that divide the MBL regimes into different subregimes based on the onset of avalanches and many-body resonances.
Article
Materials Science, Multidisciplinary
Colin Rylands, Alireza Parhizkar, Victor Galitski
Summary: Kondo lattice models have proven to be ideal for studying the interplay between topology and strong correlations. Researchers have discovered an exact transformation of fermions using non-Abelian bosonization, which allows the system to be expressed as decoupled free fermions and interacting spins. This transformation is anomalous and results in the generation of kinetic terms for spins and generalizations of the chiral magnetic and Hall effects.
Article
Mathematics, Applied
Jung-Heum Park
Summary: This paper introduces a class of torus-like graphs and demonstrates that building torus-like graphs from lower dimensional ones with good properties will retain these properties. Therefore, for every m-dimensional nonbipartite torus, m >= 2, with at most f vertex and/or edge faults, there exists a paired many-to-many k-disjoint path cover joining arbitrary disjoint sets S and T of size k each.
DISCRETE APPLIED MATHEMATICS
(2021)
Article
Computer Science, Interdisciplinary Applications
Ramavarmaraja Kishor Kumar, Vladimir Loncar, Paulsamy Muruganandam, Sadhan K. Adhikari, Antun Balaz
COMPUTER PHYSICS COMMUNICATIONS
(2019)
Article
Physics, Condensed Matter
Arya Dhar, Christian Baals, Bodhaditya Santra, Andreas Muellers, Ralf Labouvie, Thomas Mertz, Ivana Vasic, Agnieszka Cichy, Herwig Ott, Walter Hofstetter
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2019)
Article
Multidisciplinary Sciences
Dusan Vudragovic, Antun Balaz
Article
Quantum Science & Technology
Yousef Abou El-Neaj, Cristiano Alpigiani, Sana Amairi-Pyka, Henrique Araujo, Antun Balaz, Angelo Bassi, Lars Bathe-Peters, Baptiste Battelier, Aleksandar Belic, Elliot Bentine, Jose Bernabeu, Andrea Bertoldi, Robert Bingham, Diego Blas, Vasiliki Bolpasi, Kai Bongs, Sougato Bose, Philippe Bouyer, Themis Bowcock, William Bowden, Oliver Buchmueller, Clare Burrage, Xavier Calmet, Benjamin Canuel, Laurentiu-Ioan Caramete, Andrew Carroll, Giancarlo Cella, Vassilis Charmandaris, Swapan Chattopadhyay, Xuzong Chen, Maria Luisa Chiofalo, Jonathon Coleman, Joseph Cotter, Yanou Cui, Andrei Derevianko, Albert De Roeck, Goran S. Djordjevic, Peter Dornan, Michael Doser, Ioannis Drougkakis, Jacob Dunningham, Ioana Dutan, Sajan Easo, Gedminas Elertas, John Ellis, Mai El Sawy, Farida Fassi, Daniel Felea, Chen-Hao Feng, Robert Flack, Chris Foot, Ivette Fuentes, Naceur Gaaloul, Alexandre Gauguet, Remi Geiger, Valerie Gibson, Gian Giudice, Jon Goldwin, Oleg Grachov, Peter W. Graham, Dario Grasso, Maurits Van der Grinten, Mustafa Guendogan, Martin G. Haehnelt, Tiffany Harte, Aurelien Hees, Richard Hobson, Jason Hogan, Bodil Holst, Michael Holynski, Mark Kasevich, Bradley J. Kavanagh, Wolf Von Klitzing, Tim Kovachy, Benjamin Krikler, Markus Krutzik, Marek Lewicki, Yu-Hung Lien, Miaoyuan Liu, Giuseppe Gaetano Luciano, Alain Magnon, Mohammed Attia Mahmoud, Sarah Malik, Christopher McCabe, Jeremiah Mitchell, Julia Pahl, Debapriya Pal, Saurabh Pandey, Dimitris Papazoglou, Mauro Paternostro, Bjoern Penning, Achim Peters, Marco Prevedelli, Vishnupriya Puthiya-Veettil, John Quenby, Ernst Rasel, Sean Ravenhall, Jack Ringwood, Albert Roura, Dylan Sabulsky, Muhammed Sameed, Ben Sauer, Stefan Alaric Schaffer, Stephan Schiller, Vladimir Schkolnik, Dennis Schlippert, Christian Schubert, Haifa Rejeb Sfar, Armin Shayeghi, Ian Shipsey, Carla Signorini, Yeshpal Singh, Marcelle Soares-Santos, Fiodor Sorrentino, Timothy Sumner, Konstantinos Tassis, Silvia Tentindo, Guglielmo Maria Tino, Jonathan N. Tinsley, James Unwin, Tristan Valenzuela, Georgios Vasilakis, Ville Vaskonen, Christian Vogt, Alex Webber-Date, Andre Wenzlawski, Patrick Windpassinger, Marian Woltmann, Efe Yazgan, Ming-Sheng Zhan, Xinhao Zou, Jure Zupan
EPJ QUANTUM TECHNOLOGY
(2020)
Article
Physics, Multidisciplinary
Ana Hudomal, Ivana Vasic, Nicolas Regnault, Zlatko Papic
COMMUNICATIONS PHYSICS
(2020)
Article
Computer Science, Interdisciplinary Applications
Rajamanickam Ravisankar, Dusan Vudragovic, Paulsamy Muruganandam, Antun Balaz, Sadhan K. Adhikari
Summary: This paper presents OpenMP versions of FORTRAN programs for solving the Gross-Pitaevskii equation for a harmonically trapped three-component spin-1 spinor Bose-Einstein condensate. The programs include different forms of spin-orbit and Rabi couplings in 1D and 2D spatial dimensions, utilizing split-step Crank-Nicolson discretization for imaginary- and real-time propagation. The programs can calculate stationary states, BEC dynamics, and various physical quantities, with outputs such as wave function, energy, and density profiles.
COMPUTER PHYSICS COMMUNICATIONS
(2021)
Article
Computer Science, Interdisciplinary Applications
Paulsamy Muruganandam, Antun Balaz, Sadhan K. Adhikari
Summary: The program presented here solves the Gross-Pitaevskii equation for a three-component rotating spin-1 BEC in a harmonic trap in two dimensions, with options for different spin-orbit couplings. It uses the split-step Crank-Nicolson scheme for both imaginary and real-time propagation for calculating stationary states and BEC dynamics.
COMPUTER PHYSICS COMMUNICATIONS
(2021)
Article
Computer Science, Interdisciplinary Applications
Luis E. Young-S, Paulsamy Muruganandam, Antun Balaz, Sadhan K. Adhikari
Summary: In this paper, we present OpenMP Fortran 90/95 versions of numerical programs for solving the dipolar Gross-Pitaevskii equation. These programs have significantly reduced execution time on multicore processors.
COMPUTER PHYSICS COMMUNICATIONS
(2023)
Review
Quantum Science & Technology
Ivan Alonso, Cristiano Alpigiani, Brett Altschul, Henrique Araujo, Gianluigi Arduini, Jan Arlt, Leonardo Badurina, Antun Balaz, Satvika Bandarupally, Barry C. Barish, Michele Barone, Michele Barsanti, Steven Bass, Angelo Bassi, Baptiste Battelier, Charles F. A. Baynham, Quentin Beaufils, Joel Berge, Jose Bernabeu, Andrea Bertoldi, Robert Bingham, Sebastien Bize, Diego Blas, Kai Bongs, Philippe Bouyer, Carla Braitenberg, Christian Brand, Claus Braxmaier, Alexandre Bresson, Oliver Buchmueller, Dmitry Budker, Luis Bugalho, Sergey Burdin, Luigi Cacciapuoti, Simone Callegari, Xavier Calmet, Davide Calonico, Benjamin Canuel, Laurentiu-Ioan Caramete, Olivier Carraz, Donatella Cassettari, Pratik Chakraborty, Swapan Chattopadhyay, Upasna Chauhan, Xuzong Chen, Yu-Ao Chen, Maria Luisa Chiofalo, Jonathon Coleman, Robin Corgier, J. P. Cotter, A. Michael Cruise, Yanou Cui, Gavin Davies, Albert De Roeck, Marcel Demarteau, Andrei Derevianko, Marco Di Clemente, Goran S. Djordjevic, Sandro Donadi, Olivier Dore, Peter Dornan, Michael Doser, Giannis Drougakis, Jacob Dunningham, Sajan Easo, Joshua Eby, Gedminas Elertas, John Ellis, David Evans, Pandora Examilioti, Pavel Fadeev, Mattia Fani, Farida Fassi, Marco Fattori, Michael A. Fedderke, Daniel Felea, Chen-Hao Feng, Jorge Ferreras, Robert Flack, Victor V. Flambaum, Rene Forsberg, Mark Fromhold, Naceur Gaaloul, Barry M. Garraway, Maria Georgousi, Andrew Geraci, Kurt Gibble, Valerie Gibson, Patrick Gill, GianF Giudice, Jon Goldwin, Oliver Gould, Oleg Grachov, Peter W. Graham, Dario Grasso, PaulF Griffin, Christine Guerlin, Ratnesh K. Gupta, Martin Haehnelt, Leonie Hawkins, Aurelien Hees, Victoria A. Henderson, Waldemar Herr, Sven Herrmann, Thomas Hird, Richard Hobson, Vincent Hock, Jason M. Hogan, Bodil Holst, Michael Holynski, Ulf Israelsson, Peter Jeglic, Philippe Jetzer, Gediminas Juzeliunas, Rainer Kaltenbaek, Jernej F. Kamenik, Alex Kehagias, Teodora Kirova, Marton Kiss-Toth, Sebastian Koke, Shimon Kolkowitz, Georgy Kornakov, Tim Kovachy, Markus Krutzik, Mukesh Kumar, Pradeep Kumar, Claus Lammerzahl, Greg Landsberg, Christophe Le Poncin-Lafitte, David R. Leibrandt, Thomas Leveque, Marek Lewicki, Rui Li, Anna Lipniacka, Christian Lisdat, Mia Liu, J. L. Lopez-Gonzalez, Sina Loriani, Jorma Louko, Giuseppe Gaetano Luciano, Nathan Lundblad, Steve Maddox, M. A. Mahmoud, Azadeh Maleknejad, John March-Russell, Didier Massonnet, Christopher McCabe, Matthias Meister, Tadej Meznarsic, Salvatore Micalizio, Federica Migliaccio, Peter Millington, Milan Milosevic, Jeremiah Mitchell, Gavin W. Morley, Jurgen Muller, Eamonn Murphy, Ozgur E. Mustecaplioglu, Val O'Shea, Daniel K. L. Oi, Judith Olson, Debapriya Pal, Dimitris G. Papazoglou, Elizabeth Pasatembou, Mauro Paternostro, Krzysztof Pawlowski, Emanuele Pelucchi, Franck Pereira dos Santos, Achim Peters, Igor Pikovski, Apostolos Pilaftsis, Alexandra Pinto, Marco Prevedelli, Vishnupriya Puthiya-Veettil, John Quenby, Johann Rafelski, Ernst M. Rasel, Cornelis Ravensbergen, Mirko Reguzzoni, Andrea Richaud, Isabelle Riou, Markus Rothacher, Albert Roura, Andreas Ruschhaupt, DylanO Sabulsky, Marianna Safronova, Ippocratis D. Saltas, Leonardo Salvi, Muhammed Sameed, Pandey Saurabh, Stefan Schaffer, Stephan Schiller, Manuel Schilling, Vladimir Schkolnik, Dennis Schlippert, Piet O. Schmidt, Harald Schnatz, Jean Schneider, Ulrich Schneider, Florian Schreck, Christian Schubert, Armin Shayeghi, Nathaniel Sherrill, Ian Shipsey, Carla Signorini, Rajeev Singh, Yeshpal Singh, Constantinos Skordis, Augusto Smerzi, Carlos F. Sopuerta, Fiodor Sorrentino, Paraskevas Sphicas, Yevgeny Stadnik, Petruta Stefanescu, Marco G. Tarallo, Silvia Tentindo, Guglielmo M. Tino, Jonathan N. Tinsley, Vincenza Tornatore, Philipp Treutlein, Andrea Trombettoni, Yu-Dai Tsai, Philip Tuckey, Melissa A. Uchida, Tristan Valenzuela, Mathias Van den Bossche, Ville Vaskonen, Gunjan Verma, Flavio Vetrano, Christian Vogt, Wolf von Klitzing, Pierre Waller, Reinhold Walser, Eric Wille, Jason Williams, Patrick Windpassinger, Ulrich Wittrock, Peter Wolf, Marian Woltmann, Lisa Worner, Andre Xuereb, Mohamed Yahia, Efe Yazgan, Nan Yu, Nassim Zahzam, Emmanuel Zambrini Cruzeiro, Mingsheng Zhan, Xinhao Zou, Jure Zupan, Erik Zupanic
Summary: This article summarizes the discussions from a virtual Community Workshop on Cold Atoms in Space, focusing on the current status of cold atom technologies, the potential scientific and societal opportunities of using them in space, and the necessary developments for their operation in space. It covers various cold atom technologies, such as atomic clocks, quantum gravimeters and accelerometers, and atom interferometers. The potential applications include metrology, geodesy, and fundamental science experiments. The article also presents a draft roadmap for achieving these goals and proposes discussion with relevant communities and space agencies.
EPJ QUANTUM TECHNOLOGY
(2022)
Article
Quantum Science & Technology
Nathan Lundblad, David C. Aveline, Antun Balaz, Elliot Bentine, Nicholas P. Bigelow, Patrick Boegel, Maxim A. Efremov, Naceur Gaaloul, Matthias Meister, Maxim Olshanii, Carlos A. RSa de Melo, Andrea Tononi, Smitha Vishveshwara, Angela C. White, Alexander Wolf, Barry M. Garraway
Summary: Progress in understanding quantum systems has been driven by exploring the geometry, topology, and dimensionality of ultracold atomic systems. The NASA Cold Atom Laboratory (CAL) on the International Space Station enables the study of ultracold atomic bubbles, which are inaccessible on Earth. Proof-of-principle bubble experiments have been conducted on CAL using a radiofrequency-dressing technique, and an alternate technique (dual-species interaction-driven bubbles) has also been proposed. Both techniques hold the potential to drive discoveries in fundamental physics research in microgravity in the next decade.
QUANTUM SCIENCE AND TECHNOLOGY
(2023)
Article
Optics
A. Wolf, P. Boegel, M. Meister, A. Balaz, N. Gaaloul, M. A. Efremov
Summary: This study proposes creating shell-shaped Bose-Einstein condensates in microgravity using dual-species atomic mixtures as an alternative to the conventional radio-frequency dressing method. The properties of these condensates and the feasibility of realizing symmetrically filled shells are analyzed.
Article
Engineering, Chemical
Stefan A. Boskovic, Aleksandar Karac, Slobodan B. Vrhovac, Aleksandar Belic, I. Branko Bugarski
Summary: A perfect dielectric model was introduced into the OpenFOAM software to investigate and potentially improve electrohydrodynamic calculations. Two sets of numerical simulations with different fluids were analyzed. It was found that certain expressions or calculation strategies could cause oscillations and artificial generation of a curl of the electric field strength, thus suggesting that they should be abandoned. The use of dynamic meshes and limiters for the gradient of the electric field strength in the software could lead to significant numerical errors. Additionally, using certain cell face values was shown to improve results. An electric Courant number was derived by dimensional analysis and recommended for future calculations. The conclusions made in this study are expected to be applicable to other more complex models.
HEMIJSKA INDUSTRIJA
(2022)
Article
Optics
Ana Hudomal, Nicolas Regnault, Ivana Vasic
Article
Physics, Multidisciplinary
Vladimir Veljic, Axel Pelster, Antun Balaz
PHYSICAL REVIEW RESEARCH
(2019)
