Article
Astronomy & Astrophysics
S. Deser, M. Henneaux
Summary: This article re-analyzes the problem of higher spin excitations and cosmological supergravity results, using a more physical approach by considering massless and apparently-massive small excitations and showing their relationship with the cosmological constant.
CLASSICAL AND QUANTUM GRAVITY
(2022)
Article
Astronomy & Astrophysics
Hannah Banks, Dorota M. Grabowska, Matthew Mccullough
Summary: Long-baseline atom interferometers provide an exciting opportunity for exploring midband gravitational waves. Observing the contribution of merging binary systems to the total gravitational wave background in this frequency range can reveal more information about the universe. Known stellar-mass compact binary systems can be detected by existing experiments, and hypothetical populations of dark sector exotic compact objects may generate unique signals in subhertz frequencies.
Article
Astronomy & Astrophysics
Remigiusz Durka, Krzysztof M. Graczyk
Summary: We present a new superalgebra for N = 2 D = 3, 4 supergravity theory with the inclusion of the U(1) generator. This superalgebra is based on the Soroka-Soroka algebra and is spanned by the Lorentz J(ab) and Lorentz-like Z(ab), translation P-a and T generators, as well as two supercharges Q(alpha)(I). It is the only possible realization for a given generator content. We also construct a corresponding 3D Chern-Simons supergravity realization of this superalgebra and discuss its relevance.
Article
Astronomy & Astrophysics
Amin Rezaei Akbarieh, Sobhan Kazempour, Lijing Shao
Summary: This study introduces a gravitational theory with non-zero graviton mass, calculating background equations and self-accelerating solutions, as well as presenting constraints on parameters to determine their correct signs. It further analyzes tensor perturbations, computes graviton mass, and discovers gravitational wave dispersion relations for two cases. Lastly, it investigates the propagation of gravitational perturbation in the Friedman-Lemaitre-Robertson-Walker cosmology in the context of Gauss-Bonnet quasi-dilaton massive gravity.
Article
Astronomy & Astrophysics
Philippe Spindel
Summary: The study presents the field equations of torsion gravity theories and the corresponding Noether identity in terms of metric and contorsion tensors components expressed with respect to natural coordinates. Explicit solutions of these equations are obtained under specific ansatze for the contorsion field, with some of the solutions having contorsion tensors depending on arbitrary functions that do not affect geometry, leading to questions about the predictability of the theory.
Article
Multidisciplinary Sciences
Salih Kibaroglu, Oktay Cebecioglu, Ahmet Saban
Summary: By utilizing the Maxwell symmetry in D space-time dimensions, this paper considers the extension of the general-linear and special-linear algebras. It demonstrates that various Maxwell extensions of ordinary space-time algebras can be obtained through suitable contraction of generalized algebras. These extended Lie algebras may be useful in constructing generalized gravity theories and the objects that interact with them. The gravitational dynamics of these algebras are also explored within the framework of gauge theories of gravity. Additionally, modified gravity models containing the generalized cosmological constant term in four dimensions are presented by adopting the symmetry-breaking mechanism of the Stelle-West model.
Article
Physics, Particles & Fields
Oscar Castillo-Felisola, Oscar Orellana, Jose Perdiguero, Francisca Ramirez, Aureliano Skirzewski, Alfonso R. Zerwekh
Summary: This article reformulates the polynomial affine gravity model and analyzes the cosmological solutions on the truncated sectors. The emergence of different kinds of metrics is discussed.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Mathematics, Applied
Hartmut Pecher
Summary: This paper investigates the well-posedness problem of low regularity for the Maxwell-Dirac system in 3+1 dimensions. By assuming the temporal gauge A(0)=0 and utilizing the null condition fulfilled by some of the nonlinearities, the authors apply a method used by Tao in the Yang-Mills system.
DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS
(2022)
Article
Mathematics, Applied
Hartmut Pecher
Summary: The local well-posedness problem for the Maxwell-Klein-Gordon system in Coulomb gauge and Lorenz gauge in two space dimensions is discussed for data with minimal regularity assumptions. The minimal regularity assumptions in the classical case leave gaps of 1/2 and 1/4 with respect to critical regularity. The gap can be reduced for data in Fourier-Lebesgue spaces, with critical exponents approaching 1 as the parameter r approaches 1.
COMMUNICATIONS ON PURE AND APPLIED ANALYSIS
(2021)
Article
Physics, Particles & Fields
Remigiusz Durka, Krzysztof M. Graczyk
Summary: This paper explores the development of supergravity theory through algebraic methods and constructs possible extensions of the Poincare and Anti-de-Sitter algebras. By using an efficient computational method, resonance algebraic structures are generated and the specific realizations of supergravity models are provided.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Physics, Particles & Fields
Yolanda Lozano, Carlos Nunez, Anayeli Ramirez, Stefano Speziali
Summary: A new infinite family of Type IIB backgrounds with an AdS(2) factor is presented, each with a proposed dual Super Conformal Quantum Mechanics (SCQM) model. Holographic expressions for the number of vacua, Chern-Simons terms, and other non-perturbative aspects of the SCQM are provided. The central charge of the one-dimensional system is related to a combination of electric and magnetic fluxes in Type IIB, with an extremisation principle proposed using Ramond-Ramond fluxes. Other physical and geometrical aspects of these conformal quantum mechanics are analyzed.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
D. V. Giri, F. M. Tesche, M. A. Morgan
Summary: This communication provides a brief overview of the study conducted by Giri et al. (2022). The use of vector and scalar potentials is convenient for solving boundary value problems related to electromagnetic fields. The Lorenz and Coulomb gauges, which are special cases of the velocity gauge or nu-gauge, where nu represents an arbitrary complex propagation velocity, are commonly used. However, the generalized nu-gauge is not typically taught to electrodynamics students. The paper describes the nu-gauge and its application through an example.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Physics, Particles & Fields
Giuseppe Bogna, Lionel Mason
Summary: The construction of perturbative quantities on non-linear backgrounds allows for the inclusion of strong field effects in perturbation theory. In this study, we continue the effort to construct QFT observables on self-dual backgrounds in Yang-Mills theory, extending previous work on amplitudes to form factors and incorporating supersymmetry. Our analysis, based on reconstruction from data at null infinity, is closely related to research on celestial and twisted holography. We explore form factors in both pure Yang-Mills and their supersymmetric counterparts in N = 4 SYM, focusing on self-dual backgrounds. Using new formulae for lifting operators to twistor space, we derive tree-level MHV form factors around these backgrounds, providing simple dressings of the corresponding form factors around the vacuum. We also discuss the potential for going beyond the MHV sector by introducing dressed versions of the MHV diagram propagator, and we explore generating functionals and dual conformal representations of the MHV all plus 1-loop amplitude.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Laura Rado, Victor O. Rivelles, Renato Sanchez
Summary: We investigated three-parameter Yang-Baxter deformations of the AdS(5)x T-1,T-1 superstring for abelian r-matrices which are solutions of the classical Yang-Baxter equation. We discovered the NSNS fields of two new backgrounds that are dual to the dipole deformed Klebanov-Witten gauge theory and to the nonrelativistic Klebanov-Witten gauge theory with Schrodinger symmetry.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Multidisciplinary
Robert S. Eisenberg
Summary: When forces are applied to matter, the distribution of mass changes; similarly, when an electric field is applied to matter with charge, the distribution of charge changes. The change in charge distribution may result in the usage of the polarization field P. In nonlinear, time-dependent scenarios, the distribution of charge needs to be computed using a combination of electrodynamics and mechanics.
Article
Physics, Particles & Fields
Luis Aviles, Ernesto Frodden, Joaquim Gomis, Diego Hidalgo, Jorge Zanelli
JOURNAL OF HIGH ENERGY PHYSICS
(2018)
Article
Physics, Particles & Fields
Andrea Barducci, Roberto Casalbuoni, Joaquim Gomis
JOURNAL OF HIGH ENERGY PHYSICS
(2018)
Article
Astronomy & Astrophysics
Jerzy Lukierski, Stjepan Meljanac, Mariusz Woronowicz
Article
Astronomy & Astrophysics
Richard Kerner, Jerzy Lukierski
Article
Physics, Multidisciplinary
Andrea Barducci, Roberto Casalbuoni, Joaquim Gomis
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2019)
Article
Physics, Multidisciplinary
Joaquim Gomis, Axel Kleinschmidt, Jakob Palmkvist, Patricio Salgado-Rebolledo
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Particles & Fields
Jerzy Kowalski-Glikman, Jerzy Lukierski, Tomasz Trzesniewski
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Multidisciplinary Sciences
Jerzy Lukierski
Summary: The paper introduces the construction of recently introduced palatial NC twistors by considering conjugated twist-deformed algebras, as well as introducing quantum covariant modules and quantum deformations of Heisenberg-conformal algebra. It describes examples of TDSR algebra related to palatial twistors introduced by Drinfeld twist and quantization map in H-h(4,4), and also introduces a generalized quantum twistorial phase space.
Article
Physics, Particles & Fields
Richard Kerner, Jerzy Lukierski
Summary: This paper discusses the description of quarks in QCD, arguing that internal and external symmetries are entangled, especially in the color sector. It introduces the concept of Z(3)-graded Lorentz algebra to provide a faithful spinorial representation.
Article
Astronomy & Astrophysics
Jerzy Lukierski, Mariusz Woronowicz
Summary: This article discusses the relativistic Lorentz-covariant quantum space-times obtained by Snyder and the Lorentz-covariant quantum phase spaces introduced by Yang, as well as their extensions in superalgebras. The article also briefly reviews other ways of deriving quantum phase spaces and compares different types of Snyder models.
Article
Astronomy & Astrophysics
Carles Batlle, Victor Campello, Joaquim Gomis
Summary: We express the nonlocal BMS charges of a free massless Klein-Gordon scalar field in 2 thorn 1 in terms of the Green functions of the polyharmonic operators. Using these Green functions, we discuss the asymptotic behavior of the fields that ensures the existence of the charges and prove the realization of the 2 thorn 1 BMS algebra in canonical phase space. We also show that the algebra closes only up to skew-symmetric combinations of the equations of motion in configuration space. The formulation of charges in terms of Green functions allows for generalization to other dimensions and systems.
Article
Astronomy & Astrophysics
Roberto Casalbuoni, Joaquim Gomis, Diego Hidalgo
Summary: This study formulates the worldline approach for field theories of certain fracton models and their symmetries, distinguishing between models based on their energy dispersion relations. To study subsystem symmetries, Routhian functionals associated with particle Lagrangians are constructed, and a pseudoclassical description of spinning fractons is developed.
Article
Astronomy & Astrophysics
Jerzy Lukierski, Mariusz Woronowicz
Proceedings Paper
Mathematics, Applied
Richard Kerner, Jerzy Lukierski
XXVI INTERNATIONAL CONFERENCE ON INTEGRABLE SYSTEMS AND QUANTUM SYMMETRIES
(2019)
Article
Astronomy & Astrophysics
Andrea Barducci, Roberto Casalbuoni, Joaquim Gomis
