Article
Astronomy & Astrophysics
Juven Wang, Yi-Zhuang You
Summary: In this paper, the author proposes an alternative view of the Standard Model, suggesting that it arises from various neighboring vacuum competition in a vast quantum phase diagram. By introducing two toy models, the author demonstrates the specific details and discusses the possible beyond the Standard Model excitations. The paper also discusses two cases regarding internal symmetries and explores the kinematic and global anomaly matching constraints between the UV parent theory and various candidate IR field theories. Further verification of the IR dynamics is desirable.
Article
Physics, Particles & Fields
James Alvey, Miguel Escudero
Summary: Continuous global symmetries may be broken by gravity, posing a threat to certain solutions like the Peccei-Quinn solution to the strong CP problem. Wormholes as a source of gravity-induced global symmetry breaking have important implications for the quality of axions, particularly in non-perturbative Einstein gravity and open String Theory.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Mohamed M. Anber, Erich Poppitz
Summary: This study investigates the Standard Model with gauged Z(N=2,3,6)((1)) subgroups of its Z(6)((1)) 1-form global symmetry, showing the existence of self-dual instantons of fractional topological charge on a finite T-3. However, the contribution of these instantons is suppressed by the small hypercharge coupling unless the torus size is sub-Planckian or additional matter is added above the weak scale. These results are discussed in relation to cosmological constraints on torus size.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Vytautas Dudenas, Maximilian Loeschner
Summary: This article discusses how the renormalization constant of the Higgs vacuum expectation value fixed by a tadpole condition is responsible for gauge dependences in various definitions of parameters in the R-xi-gauge, as well as the relationship of this constant to the Fleischer-Jegerlehner (FJ) scheme. It also compares and discusses different approaches to the renormalization of tadpoles, identifying similarities and relations between them, and discusses the relationship to the Higgs background-field renormalization.
Article
Physics, Particles & Fields
Gustavo O. Heymans, Marcus Benghi Pinto
Summary: The optimized perturbation theory (OPT) shows promising results in resuming the perturbative series for the mass gap of the bidimensional phi (4) theory. It is able to generate reasonable non-perturbative results at NLO (one loop) and at order-g(7). Additionally, investigating the supercritical region reveals useful complimentary information that can be utilized for extrapolations to higher orders.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Zhijin Li
Summary: In this study, we investigate the properties of DQCP and QED(3) using the bootstrap method. We discover a new family of kinks and propose that the SO(5) DQCP is not continuous and the critical flavor number of QED(3) is slightly above 2.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Anja Beck, Meril Reboud, Danny van Dyk
Summary: Studying the accurate transfer of information from low-energy measurements to high-energy BSM models is vital for investigating potential BSM effects at the precision frontier. In this paper, we propose the use of normalising flows to construct likelihood functions that facilitate this transfer. By constructing likelihood functions in this manner, we can generate additional samples and perform a straightforward goodness-of-fit test using a chi(2) test statistic.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Astronomy & Astrophysics
Yongcheng Wu, Ke-Pan Xie, Ye-Ling Zhou
Summary: Discrete symmetries in particle theories can lead to the formation of domain walls through spontaneous breaking. The domain walls resulting from larger discrete symmetries, such as Z(N), differ from the simplest Z(2) domain walls. This study focuses on Z(N) symmetry breaking and specifically examines the Z(3) case, providing semi-analytical results for the tension and thickness of domain walls. The inclusion of explicit symmetry-breaking terms leads to more complex dynamics and distinct gravitational wave signals compared to Z(2) domain walls.
Article
Physics, Particles & Fields
Noam Chai, Eliezer Rabinovici, Ritam Sinha, Michael Smolkin
Summary: In the finite N and general spacetime dimensions, the O(m) x O(N - m) vector model exhibits a conformal manifold and a moduli space of vacua. Studies have revealed a set of double trace scalar operators with deformations and anomalous dimensions in d dimensions under the large rank limit. Moreover, under specific conditions, the scaling dimensions of various operators can be explicitly calculated.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Marzia Bordone, Claudia Cornella, Gino Isidori, Matthias Koenig
Summary: This study examines the precision testing of mu/e universality in B -> pi l(+) l(-) decays, showing that the ratio between muonic and electronic decay widths can be accurately predicted in a wide range of the dilepton invariant mass spectrum within and beyond the Standard Model. Numerical expressions are provided to extract precise information on short-distance dynamics in case of any deviation from universality in the observed data.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Physics, Particles & Fields
Daniele Dorigoni, Axel Kleinschmidt, Rudolfs Treilis
Summary: Modular graph functions are important in calculating the low-energy expansion of closed-string scattering amplitudes. In this study, we investigate their properties on toroidal world-sheets and use methods from resurgent analysis to construct non-perturbative corrections for two-loop modular graph functions approaching the cusp on the moduli space. The SL(2, Z)-invariance strongly constrains the behavior of the non-perturbative sector when expanded at the origin of the moduli space.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Astronomy & Astrophysics
Seth Koren
Summary: In this short note, the symmetry responsible for absolute, nonperturbative proton stability in the Standard Model is described. The Standard Model with Nc colors and Ng generations possesses an exact, anomaly-free, generation-independent, global symmetry group that disallows proton decay for N-g > 1. Many well-studied models beyond the Standard Model explicitly break this global symmetry, and alternative solutions deserve further attention.
Article
Physics, Particles & Fields
Fedor K. Popov, Yifan Wang
Summary: The study focuses on the dynamics of defects in the Klebanov-Tarnopolsky tensor model, identifying a new large N limit in the presence of defects and proving that the defect one-point function only receives contributions from melonic trees. By solving a closed Schwinger-Dyson equation, the defect one-point function is determined non-perturbatively, leading to the description of nontrivial conformal defects at large distances. Additionally, analysis of the defect two-point function and its decomposition using the operator-product-expansion provides explicit formulae for one-point functions of bilinear operators and the stress-energy tensor.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Editorial Material
Green & Sustainable Science & Technology
Noelle E. Selin
Summary: Reducing greenhouse gases can improve air quality and overall health, but the extent and distribution of these benefits are uncertain. A recent study reveals that although carbon policies have led to widespread improvements in air quality, some regions could experience increased pollution.
NATURE SUSTAINABILITY
(2023)
Article
Multidisciplinary Sciences
Chad Nathe, Lucia Valentina Gambuzza, Mattia Frasca, Francesco Sorrentino
Summary: This article introduces a method to detect the presence of nearly equitable partitions in weighted networks and applies it to discover the existence of dynamical communities. Compared to existing methods, this approach is more effective in predicting the emergence of synchronized behavior.
SCIENTIFIC REPORTS
(2022)
Article
Astronomy & Astrophysics
Alfredo Urbano
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Astronomy & Astrophysics
Guillermo Ballesteros, Julian Rey, Marco Taoso, Alfredo Urbano
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Astronomy & Astrophysics
Marco Fabbrichesi, Alfredo Urbano
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Astronomy & Astrophysics
Guillermo Ballesteros, Julian Rey, Marco Taoso, Alfredo Urbano
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Physics, Multidisciplinary
Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma, Maxim Pospelov, Joshua T. Ruderman, Alfredo Urbano
Summary: In this study, a new class of signatures called spectral edges and end points are introduced in 21-cm measurements, resulting from interactions between the standard and dark sectors. It demonstrates how resonant dark photon-to-photon conversions can leave distinctive spectral features in the observed 21-cm brightness temperature, with implications for current, upcoming, and proposed experiments targeting the cosmic dawn and the dark ages. These signatures offer a qualitatively new approach to searching for physics beyond the Standard Model using 21-cm observations.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Particles & Fields
Rodrigo Alonso, Cristofero Fraser-Taliente, Chris Hays, Michael Spannowsky
Summary: The study focuses on probing the CP structure of hqq interactions using the decays of the lightest baryon Lambda(q), finding that only the mu(+)mu(-) collider can produce enough decays to probe a physical CP asymmetry.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Giacomo Ferrante, Gabriele Franciolini, Antonio Junior Iovino, Alfredo Urbano
Summary: We present a comprehensive formalism for computing the abundance of primordial black holes (PBHs) with local non-Gaussianity (NG) in the curvature perturbation field. We go beyond the traditional quadratic and cubic approximations and consider a generic functional form for NG. Our approach considers both narrow and broad power spectra. We show that the conventional perturbative approach is only reliable for narrow spectra, while for broad spectra, nonperturbative computations are necessary to obtain accurate results.
Article
Astronomy & Astrophysics
Gabriele Franciolini, Ilia Musco, Paolo Pani, Alfredo Urbano
Summary: Recent population studies have used gravitational-wave (GW) events detected by LVK to search for a subpopulation of primordial black holes (PBHs), and have investigated the impact of the power spectrum of cosmological perturbations on the PBH abundance and mass distribution. The results indicate that the majority of dark matter is unlikely to exist in the form of stellar mass PBHs, based on the observations from LVK.
Article
Astronomy & Astrophysics
Gabriele Franciolini, Alfredo Urbano
Summary: Constraining the inflationary epoch is a crucial goal in modern cosmology. This study proposes a new reverse engineering approach to connect late-time observables to consistent inflationary dynamics and the inflaton potential. Through this approach, researchers find that inflation can generate a raised plateau in the power spectrum of curvature perturbations, which connects to fundamental observables such as dark matter, stochastic gravitational waves, and primordial black hole mergers.
Article
Astronomy & Astrophysics
Rodrigo Alonso, Mia West
Summary: In this work, we study the theories that lead to the formation of the Standard Model, and find evidence supporting the Standard Model effective field theory as the only pathway to it.
Article
Astronomy & Astrophysics
Rodrigo Alonso, Jakub Scholtz
Summary: It has been found that the abundance of dark matter may be sourced by the baryon/lepton asymmetry of the early Universe. Through the mechanism of the Goldstone field, initial conditions for dark matter can be dynamically generated, with predictions showing an inverse dependence on coupling. When combined with leptogenesis, a viable region of parameter space for dark matter production can be identified.
Article
Obstetrics & Gynecology
Gisele Vissoci Marquini, Francisco Edes da Silva Pinheiro, Alfredo Urbano da Costa Vieira, Rogerio Melo da Costa Pinto, Maria Gabriela Baumgarten Kuster Uyeda, Manoel Joao Batista Castello Girao, Marair Gracio Ferreira Sartori
REVISTA BRASILEIRA DE GINECOLOGIA E OBSTETRICIA
(2020)
Article
Astronomy & Astrophysics
Rodrigo Alonso, Alfredo Urbano