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Abundant Symmetry-Breaking Solutions of the Nonlocal Alice–Bob Benjamin–Ono System

open access: yesComplexity, 2020
The Benjamin–Ono equation is a useful model to describe the long internal gravity waves in deep stratified fluids. In this paper, the nonlocal Alice–Bob Benjamin–Ono system is induced via the parity and time-reversal symmetry reduction. By introducing an
Wang Shen   +4 more
doaj   +1 more source

No-go for tree-level R-symmetry breaking

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
We show that in gauge mediation models with tree-level R-symmetry breaking where supersymmetry and R-symmetries are broken by different fields, the gaugino mass either vanishes at one loop or finds a contribution from loop-level R-symmetry breaking. Thus
Feihu Liu, Muyang Liu, Zheng Sun
doaj   +1 more source

Noether identities in gravity theories with nondynamical backgrounds and explicit spacetime symmetry breaking [PDF]

open access: yes, 2016
Gravitational effective field theories with nondynamical backgrounds explicitly break diffeomorphism and local Lorentz invariance. At the same time, to maintain observer independence the action describing these theories is required to be mathematically ...
R. Bluhm, Amar Sehic
semanticscholar   +1 more source

$$ \mu -\tau $$ μ-τ reflection symmetry embedded in minimal seesaw

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We embed $$\mu -\tau $$ μ-τ reflection symmetry into the minimal seesaw formalism, where two right-handed neutrinos are added to the Standard Model of particle physics. Assuming that both the left- and right-handed neutrino fields transform under $$\mu -\
Newton Nath, Zhi-zhong Xing, Jue Zhang
doaj   +1 more source

The effective action of superrotation modes

open access: yesJournal of High Energy Physics, 2021
Starting from an analysis of four-dimensional asymptotically flat gravity in first order formulation, we show that superrotation reparametrization modes are governed by an Alekseev-Shatashvili action on the celestial sphere.
Kévin Nguyen, Jakob Salzer
doaj   +1 more source

Adding machine learning within Hamiltonians: Renormalization group transformations, symmetry breaking and restoration [PDF]

open access: yesarXiv.org, 2020
We present a physical interpretation of machine learning functions, opening up the possibility to control properties of statistical systems via the inclusion of these functions in Hamiltonians.
Dimitrios Bachtis, G. Aarts, B. Lucini
semanticscholar   +1 more source

Dark matter from a complex scalar singlet: the role of dark CP and other discrete symmetries

open access: yesJournal of High Energy Physics, 2021
We study the case of a pseudo-scalar dark matter candidate which emerges from a complex scalar singlet, charged under a global U(1) symmetry, which is broken both explicitly and spontaneously.
Leonardo Coito   +3 more
doaj   +1 more source

Replica symmetry breaking in neural networks: a few steps toward rigorous results [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2020
In this paper we adapt the broken replica interpolation technique (developed by Francesco Guerra to deal with the Sherrington-Kirkpatrick model, namely a pairwise mean-field spin-glass whose couplings are i.i.d.
E. Agliari   +3 more
semanticscholar   +1 more source

A holographic perspective on phonons and pseudo-phonons

open access: yesJournal of High Energy Physics, 2017
We analyze the concomitant spontaneous breaking of translation and conformal symmetries by introducing in a CFT a complex scalar operator that acquires a spatially dependent expectation value.
Andrea Amoretti   +4 more
doaj   +1 more source

Holographic phonons by gauge-axion coupling

open access: yesJournal of High Energy Physics, 2021
In this paper, we show that a simple generalization of the holographic axion model can realize spontaneous breaking of translational symmetry by considering a special gauge-axion higher derivative term.
Xi-Jing Wang, Wei-Jia Li
doaj   +1 more source

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