Results 21 to 30 of about 39,384 (246)

Ferromagnets, a new anomaly, instantons, and (noninvertible) continuous translations

open access: yesSciPost Physics
We discuss a large class of classical field theories with continuous translation symmetry. In the quantum theory, a new anomaly explicitly breaks this translation symmetry to a discrete symmetry.
Nathan Seiberg
doaj   +1 more source

The discrete Green-Schwarz mechanism in 6D F-theory and elliptic genera of non-critical strings

open access: yesJournal of High Energy Physics, 2023
We study global anomalies of discrete gauge symmetries in six-dimensional supergravities and their realizations in F-theory. We explicitly construct a discrete Green-Schwarz mechanism that depends on the choice of a coupling constant and on a certain ...
Markus Dierigl   +2 more
doaj   +1 more source

Spontaneous breaking of gauge groups to discrete symmetries

open access: yesJournal of High Energy Physics, 2017
Many models of beyond Standard Model physics connect flavor symmetry with a discrete group. Having this symmetry arise spontaneously from a gauge theory maintains compatibility with quantum gravity and can be used to systematically prevent anomalies.
Bradley L. Rachlin, Thomas W. Kephart
doaj   +1 more source

On discrete Lorenz attractors of various types [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика
The purpose of this work is to develop the theory of discrete attractors of Lorenz type in the case of three-dimensional maps. In this case, special attention will be paid to standard discrete Lorenz attractors, as well as discrete Lorenz attractors with
Gonchenko, Aleksandr Sergeevich
doaj   +1 more source

Condensed matter physics in time crystals

open access: yesNew Journal of Physics, 2020
Time crystals are physical systems whose time translation symmetry is spontaneously broken. Although the spontaneous breaking of continuous time-translation symmetry in static systems is proved impossible for the equilibrium state, the discrete time ...
Lingzhen Guo, Pengfei Liang
doaj   +1 more source

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

open access: yesFEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

Diffusion Spectrum Imaging Maps Early Axonal Loss and a Unique Progressive Signal in Neuronal Intranuclear Inclusion Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To delineate specific in vivo white matter pathology in neuronal intranuclear inclusion disease (NIID) using diffusion spectrum imaging (DSI) and define its clinical relevance. Methods DSI was performed on 42 NIID patients and 38 matched controls.
Kaiyan Jiang   +10 more
wiley   +1 more source

Radiative mixing of the one Higgs boson and emergent self-interacting dark matter

open access: yesPhysics Letters B, 2016
In all scalar extensions of the standard model of particle interactions, the one Higgs boson responsible for electroweak symmetry breaking always mixes with other neutral scalars at tree level unless a symmetry prevents it. An unexplored important option
Ernest Ma
doaj   +1 more source

Goldstone bosons in different PT-regimes of non-Hermitian scalar quantum field theories

open access: yesNuclear Physics B, 2020
We study the interplay between spontaneously breaking global continuous and discrete antilinear symmetries in a newly proposed general class of non-Hermitian quantum field theories containing a mixture of complex and real scalar fields.
Andreas Fring, Takanobu Taira
doaj   +1 more source

The other variants of mixed μ-τ symmetry

open access: yesNuclear Physics B, 2023
Two new neutrino mass matrix textures exhibiting the mixed μ-τ symmetry are proposed. The mass matrices hint for a promising neutrino mixing schemes and find their connections with Δ(27) and A4 discrete symmetry groups respectively.
Pralay Chakraborty, Subhankar Roy
doaj   +1 more source

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