Physical Review D - February 2023

Physical Review D covering particles, fields, gravitation, and cosmology View Email Online Volume 107, Issues 3 - 4 February 2023   View Recent   Advertisement Attend April Meeting 2023 Registration is open for April Meeting 2023: Quarks to Cosmos! Discover cutting-edge research in astrophysics, particle physics, nuclear physics, and gravitation, network with other physicists to advance your career, and learn about current issues relevant to the physics community. Register today »     Advertisement Register by March 27 for the June Faculty Teaching Institute Don't miss this great opportunity to participate in the AAPT/APS/AAS Faculty Teaching Institute (FTI), an in-person workshop in Washington, DC to be held June 26-27, 2023, for early career physics and astronomy faculty! Join us in learning the latest practices in student-centered teaching and inclusive teaching approaches, building a rewarding faculty career, and connecting with an engaged professional community. Learn more and register »     Not an APS member? Join today to start connecting with a community of more than 50,000 physicists.   Highlights Editors' Suggestion Probing neutral triple gauge couplings at the LHC and future hadron colliders John Ellis, Hong-Jian He, and Rui-Qing Xiao Phys. Rev. D 107, 035005 (2023) – Published 6 February 2023 Many searches for new physics can be parameterized by higher-dimension operators in effective field theories. In this work, the authors show a consistent translation of dimension-8 operators into triple gauge boson form factors and analyze the expected experimental reach. Incorporating the full Standard Model symmetry requires an additional term which has been neglected in earlier work, leading to significantly different results.     Editors' Suggestion Dynamical evolution of U(1) gauged Q-balls in axisymmetry Michael P. Kinach and Matthew W. Choptuik Phys. Rev. D 107, 035022 (2023) – Published 21 February 2023 Q-ball solitons are classical solutions of field theories in which stability is not guaranteed by topological arguments. Stability is a particularly acute issue for gauged Q-balls, where ordinary methods of stability analysis fail. In this work, Michael Kinach and Matthew Choptuik use powerful numerical methods to study the nonlinear evolution of gauged Q-ball configurations under axisymmetric perturbations and reveal the existence of a rich array of stable and unstable possibilities.     Editors' Suggestion Diffuse neutrino flux measurements with the Baikal-GVD neutrino telescope V. A. Allakhverdyan et al. (Baikal-GVD Collaboration) Phys. Rev. D 107, 042005 (2023) – Published 21 February 2023 The Baikal-GVD neutrino telescope collaboration reports observing the diffuse cosmic neutrino flux. Relying on cascade events produced predominantly by electron and tau neutrinos, they observe a significant excess of events over what is expected from the atmospheric neutrino background. The power law fit of the flux and the observation itself are consistent with and a significant independent confirmation of the landmark results of IceCube.     Editors' Suggestion Asteroids for ultralight dark-photon dark-matter detection Michael A. Fedderke and Anubhav Mathur Phys. Rev. D 107, 043004 (2023) – Published 3 February 2023 This forward looking work considers the technical requirements for a post-LISA gravitational wave detector in the μHz frequency regime. The novel goal is to detect changes in the separation between asteroids in the Solar System as a probe for "dark-photon dark matter."     Editors' Suggestion Variance of the Hellings-Downs correlation Bruce Allen Phys. Rev. D 107, 043018 (2023) – Published 15 February 2023 The Hellings-Down (HD) function describes gravitational-wave (GW) induced correlations in pulse arrival times from pulsar populations. The author presents a thorough analytical treatment of the HD variance, demonstrating how cosmological vs. pulsar effects can be separated, and how variance measurements can provide unique insight on the GW sources themselves.     Editors' Suggestion Stochastic gravitational waves from postinflationary structure formation Benedikt Eggemeier, Jens C. Niemeyer, Karsten Jedamzik, and Richard Easther Phys. Rev. D 107, 043503 (2023) – Published 2 February 2023 The authors study the (stochastic background) gravitational wave signal from the gravitational collapse of fluctuations in the inflation condensate following inflation and the signal's possible detection in current and future experiments. They manage to quantify this largely unexplored gravitational wave source in the primordial universe and show it might have present-day observable consequences, opening with this a potential window into the earliest moments after the Big Bang.     Editors' Suggestion Primordial non-Gaussianity up to all orders: Theoretical aspects and implications for primordial black hole models Giacomo Ferrante, Gabriele Franciolini, Antonio Junior Iovino, and Alfredo Urbano Phys. Rev. D 107, 043520 (2023) – Published 16 February 2023 The authors develop a formalism for computing the abundance of primordial black holes (PBH) in the presence of local non-Gaussianities in the curvature perturbation field. They show that polynomial expansions will not suffice in certain limits and provide numerical methods to address this issue. They demonstrate how their technique affects both the total PBH abundances and gravitational wave expectations.     Editors' Suggestion Inflationary Adler conditions Daniel Green, Yiwen Huang, and Chia-Hsien Shen Phys. Rev. D 107, 043534 (2023) – Published 23 February 2023 The authors study the Effective Field Theory (EFT) of Inflation in the sub-horizon limit, where space-time becomes flat but Lorentz boosts are still broken. They consider the Goldstone bosons associated with the spontaneous breaking of Lorentz boosts, and derive a soft theorem for scattering amplitudes. As an application, the authors show that the Dirac-Born-Infeld Inflation is the unique theory that has an emergent Lorentz invariance when the boosts are spontaneously broken.     Editors' Suggestion Effective two-body approach to the hierarchical three-body problem: Quadrupole to 1PN Adrien Kuntz, Francesco Serra, and Enrico Trincherini Phys. Rev. D 107, 044011 (2023) – Published 6 February 2023 The dynamics of binaries can be significantly affected by the presence of other bodies. This manuscript considers the hierarchical three-body problem where a third body is far compared to the distance scale of the binary. The authors make significant progress in developing a two-body approximation scheme in which corrections to the dynamics can be systematically computed at long timescales in comparison to the orbital periods characterizing the problem. The power of the method is demonstrated by computing post-Newtonian and multipole corrections.     Editors' Suggestion Searching for Coleman–de Luccia bubbles in AdS compactifications Giuseppe Dibitetto and Nicolò Petri Phys. Rev. D 107, 046020 (2023) – Published 27 February 2023 The authors study the spontaneous nucleation of bubbles within metastable (gravitational) vacua, including a true stable vacuum, in the context of consistent lower-dimensional truncations of string and M-theories. They present two fully backreacted examples, without thin-wall approximation, of gravitational instantons obtained from a numerical integration of the first-order Hamilton-Jacobi equations. These solutions are domain walls connecting a supersymmetric and a non-supersymmetric AdS vacuum that show a nonperturbative instability of the non-SUSY AdS vacua.     American Physical Society: 1 Physics Ellipse, College Park, MD 20740 ©2023 American Physical Society | All rights reserved You are receiving this email because you are subscribed to Table of Content alerts. If you no longer wish to receive these emails, please update your preferences.