Article
Astronomy & Astrophysics
Prudhvi N. Bhattiprolu, Stephen P. Martin
Summary: Solutions to the mu problem in supersymmetry based on the Kim-Nilles mechanism naturally include a DFSZ axion with enhanced couplings, where anomaly-free discrete symmetries play a crucial role in protecting the Peccei-Quinn symmetry. These models require at least one pair of strongly interacting vectorlike multiplets at an intermediate scale to be free of the domain wall problem, making them promising for proposed axion searches.
Article
Physics, Particles & Fields
Fotis Farakos
Summary: Inspired by the stringy quintessence F-term problem, we discuss a generic contribution to effective moduli masses arising from kinetic mixings. Several supergravity toy models accommodate this effect but may have shortcomings. A proposed 2-derivative supersymmetric invariant plays a crucial role in mediating supersymmetry breaking from the kinetic quintessence sector.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Gia Dvali, Anna Jankowsky
Summary: By utilizing Goldstino properties, it has been shown that in generic grand unified theories, the At problem does not exist, and the shifts of heavy fields generating At and BAt terms are induced universally by supersymmetry breaking, regardless of the scale of grand unification. This mechanism works irrespective of whether doublet-triplet splitting is achieved through fine-tuning or not.
Article
Multidisciplinary Sciences
Yunhao Fu, Tianjun Li, Longjie Ran, Zheng Sun
Summary: In gauge mediation models with multiple spurion fields breaking SUSY and the R-symmetry separately, it is shown that gaugino masses can be generated in one loop if the R-charge arrangement satisfies a certain condition. The resulting gaugino masses are calculated and suppressed by a power of the messenger's mass scale. Two simple examples are presented to demonstrate this possibility and discuss possible phenomenology implications.
Article
Physics, Particles & Fields
Yoonbai Kim, O-Kab Kwon, D. D. Tolla
Summary: We study spontaneous supersymmetry breaking in inhomogeneous extensions of N = 1 supersymmetric field theory models in 4-dimensions. It is found that the inhomogeneous deformations often break the R-symmetry explicitly, and spontaneous breaking of the R-symmetry is infeasible.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Andrea Luzio, Ling-Xiao Xu
Summary: Recent works argue that the pattern of chiral symmetry breaking in QCD-like theories can be derived from supersymmetric (SUSY) QCD with perturbation of anomaly-mediated SUSY breaking (AMSB). This study aims to resolve the problems in this derivation and discuss their physical implications. The authors successfully derive the expected chiral symmetry breaking pattern using AMSB, but find that phase transitions and non-holomorphic physics are necessary in certain cases. The study also confirms the consistency of the derived potential with holomorphic mass term contributions.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Riccardo Argurio, Matteo Bertolini, Sebastian Franco, Eduardo Garcia-Valdecasas, Shani Meynet, Antoine Pasternak, Valdo Tatitscheff
Summary: By studying (orientifolded) toric Calabi-Yau singularities, we identify a specific construction that can lead to dynamical supersymmetry breaking at low energy, providing the potential for a stable vacuum with supersymmetry breaking.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Louise Anderson, Matthew M. Roberts
Summary: The article discusses the construction of new families of deformed supersymmetric field theories by writing deformations as couplings to background multiplets, and also considers backgrounds which preserve some superconformal symmetry, finding scale-invariant field profiles, as well as N = 2 theories on S-3. This work is related to previous research on interface SCFTs and other holographic calculations.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Manimala Chakraborti, Leszek Roszkowski, Sebastian Trojanowski
Summary: The recent confirmation by Fermilab-based Muon g-2 experiment of the (g - 2)(mu) anomaly has implications for allowed particle spectra in supersymmetry models with dark matter. The study found that general patterns of dark matter could be accommodated in unified SUSY models, unlike in simpler frameworks. Accessing these solutions at the LHC may be challenging due to compressed spectra.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Diogo Buarque Franzosi, Gabriele Ferretti, Ellen Riefel, Sara Strandberg
Summary: This paper discusses the electroweak collider signatures of the NMSSM with multiple-sector gauge mediation, focusing on the production of neutralinos and charginos that cascade decay into standard model particles and lighter supersymmetric particles, with a special emphasis on final states with multiple photons. A search strategy for signatures with at least three photons is presented and found to give stronger constraints than the existing two-photon analysis for these models in many regions of the parameter space.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Astronomy & Astrophysics
Botao Guo, Xiaohu Sun, Licheng Zhang, Zhe Li, Yong Ban
Summary: The Higgs boson pair production via gluon-gluon fusion and vector boson fusion in the bb overbar mu+mu- final state at the LHC is studied to probe the Higgs self-coupling kappa lambda and the four-boson HHVV coupling kappa 2V for the first time. A cut-based analysis and a machine-learning analysis using boosted decision trees are performed with categorizations and optimizations depending on the variations of these couplings. The expected sensitivities and constraints on the couplings at 95% confidence level are calculated.
Article
Astronomy & Astrophysics
Hun Jang, Massimo Porrati
Summary: A new mechanism for generating a Fayet-Iliopoulos term in supergravity is proposed, not associated with an R-symmetry, to establish a semi-realistic theory of slow-roll inflation. In this model, supersymmetry must be broken at a high scale in a hidden sector to ensure that the cutoff of the effective field theory is above the Hubble scale of inflation.
Article
Computer Science, Interdisciplinary Applications
Thomas Biekoetter
Summary: The Python package munuSSM presented in this paper allows for phenomenological studies in the context of the mu-from-nu Supersymmetric Standard Model. It incorporates radiative corrections to the neutral scalar potential at full one-loop level, and can include higher-order corrections via an automated link to the public code FeynHiggs for an accurate prediction of the SM-like Higgs-boson mass. The package also calculates effective couplings and branching ratios of neutral and charged Higgs bosons, and provides a flexible framework that can be extended by users for further calculations and constraints.
COMPUTER PHYSICS COMMUNICATIONS
(2021)
Article
Physics, Particles & Fields
Dario Partipilo
Summary: The study focuses on the vacua of maximal gauged supergravity theories in seven space-time dimensions, utilizing a new method of varying the embedding tensor to search for vacua. Evolution Strategies optimization techniques are used to solve the quadratic constraints resulting from this method, and analytical results are obtained from numerical outcomes, providing a complete mass spectra.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Optics
Stuart Ward, Rouzbeh Allahverdi, Arash Mafi
Summary: Micro-bending is a well-known source of loss in optical waveguides. By treating it as a stochastic process, a new formalism based on Supersymmetric Quantum Mechanics is developed to derive a refractive index profile that potentially results in less loss.
OPTICS COMMUNICATIONS
(2022)
Article
Physics, Particles & Fields
Yasunori Nomura, Grant N. Remmen
JOURNAL OF HIGH ENERGY PHYSICS
(2018)
Article
Physics, Particles & Fields
Csaba Csaki, Maximilian Ruhdorfer, Yuri Shirman
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Itay M. Bloch, Csaba Csaki, Michael Geller, Tomer Volansky
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Review
Astronomy & Astrophysics
Yasunori Nomura
Summary: The article discusses two descriptions of quantum gravity, which present different pictures in addressing various issues of black hole physics but lead to the same physical conclusions. The perspective developed here is expected to have broader implications beyond black hole physics.
MODERN PHYSICS LETTERS A
(2021)
Article
Astronomy & Astrophysics
Chitraang Murdia, Yasunori Nomura, Kyle Ritchie
Summary: This article describes two different but equivalent semiclassical views, both of which can accommodate the equivalence principle and unitarity. In one view, unitarity is inherently built-in, while the black hole interior only emerges effectively as a collective phenomenon involving horizon (and possibly other) degrees of freedom. In the other, more widely studied approach, the existence of the interior is manifest, but the unitarity of the underlying dynamics can only be captured indirectly by incorporating certain nonperturbative effects of gravity. These two pictures correspond to a distant description and a description based on entanglement islands/replica wormholes, respectively. The existence of these two approaches is rooted in the two formulations of quantum mechanics: the canonical and path integral formalisms.
Article
Astronomy & Astrophysics
Kevin Langhoff, Chitraang Murdia, Yasunori Nomura
Summary: By employing the quantum extremal surface prescription, we studied the redundancies in the global spacetime description of the eternally inflating multiverse and found that a quantum entanglement "island" surrounds sufficiently large spatial regions in bubble universes. This results in the semiclassical physics of the multiverse being fully described by the fundamental degrees of freedom associated with certain finite spatial regions. The emergence of the island due to collisions with collapsing bubbles leads to a reduction of independent degrees of freedom, providing a regularization of infinities that resolves the cosmological measure problem.
Article
Astronomy & Astrophysics
Hao Geng, Yasunori Nomura, Hao-Yu Sun
Summary: The study formulates a version of the information paradox in de Sitter spacetime, which is resolved by the emergence of entanglement islands as shown in the De Sitter/de Sitter correspondence, leading to a time-dependent Page curve for the entanglement entropy. It suggests that the distribution of microscopic degrees of freedom depends on descriptions, with differences between the static and global descriptions of de Sitter spacetime.
Article
Astronomy & Astrophysics
Yasunori Nomura
Summary: A quantum system with a black hole can be described in two ways, one based on general relativity with nonperturbative quantum gravity effects, and the other adopting a manifestly unitary or holographic description. The latter approach, known as the unitary gauge construction, focuses on the emergence of the interior as a collective phenomenon of fundamental degrees of freedom. The formation of a black hole is characterized by specific dynamical properties of a surface, allowing for construction of interior operators without relying on microscopic physics details.
Article
Astronomy & Astrophysics
Kevin Langhoff, Yasunori Nomura
Article
Astronomy & Astrophysics
Chitraang Murdia, Yasunori Nomura, Pratik Rath
Article
Astronomy & Astrophysics
Yasunori Nomura
Article
Astronomy & Astrophysics
Yasunori Nomura
Article
Astronomy & Astrophysics
Yasunori Nomura
Article
Astronomy & Astrophysics
Raphael Bousso, Yasunori Nomura, Grant N. Remmen
Article
Astronomy & Astrophysics
Yasunori Nomura, Pratik Rath, Nico Salzetta
