Results 71 to 80 of about 264,462 (334)

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

arXiv.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

Gravity Theories with Background Fields and Spacetime Symmetry Breaking

, 2017
An overview is given of effective gravitational field theories with fixed background fields that break spacetime symmetry. The behavior of the background fields and the types of excitations that can occur depend on whether the symmetry breaking is ...
Bluhm, Robert
core   +2 more sources

Holographic phonons by gauge-axion coupling

Journal 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

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

Journal 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, L. Albanese, A. Barra, Gabriele Ottaviani   +3 more
semanticscholar   +1 more source

A Light Dilaton in Walking Gauge Theories

, 2010
We analyze the existence of a dilaton in gauge theories with approximate infrared conformal symmetry. To the extent that these theories are governed in the infrared by an approximate fixed point (walking), the explicit breaking of the conformal symmetry ...
Thomas Appelquist, V. P. Gusynin, Yang Bai   +2 more
core   +1 more source

Higgs sector and R-parity breaking couplings in models with broken U(1)_B-L gauge symmetry [PDF]

, 2000
Four different supersymmetric models based on SU(2)_L X U(1)_R X U(1)_B-L and SU(2)_L X SU(2)_R X U(1)_B-L gauge symmetry groups are studied. U(1)_B-L symmetry is broken spontaneously by a vacuum expectation value (VEV) of a sneutrino field.
A. Akeroyd, A. Faessler, A. Faessler, A.G. Akeroyd, A.Y. Smirnov, B. Mukhopadhyaya, C. Caso, C.S. Aulakh, C.S. Aulakh, D. Comelli, E. Accomando, E.J. Chun, F. Cuypers, G. Barenboim, G. Ecker, H.E. Haber, J. Ferrandis, J.A. Grifols, J.F. Gunion, K. Huitu, K. Huitu, K. Huitu, K. Huitu, K. Huitu, K. Huitu, K. Huitu, K. Huitu, K.S. Babu, K.S. Babu, K.S. Babu, Kai Puolamäki, M. Frank, M. Frank, M. Frank, M. Frank, M. Lusignoli, M. Masip, M. Raidal, M.E. Pospelov, M.E. Pospelov, M.L. Swartz, N. Lepore, N. Sakai, O.C. Kong, R. Kuchimanchi, R. Kuchimanchi, R. Kuchimanchi, R.M. Francis, R.N. Mohapatra, R.N. Mohapatra, R.N. Mohapatra, S. Chakrabarti, S. Weinberg, T.G. Rizzo, V. Bednyakov   +54 more
core   +2 more sources

Phases of Pseudo-Nambu-Goldstone bosons

Journal of High Energy Physics
We study the vacuum dynamics of pseudo-Nambu-Goldstone bosons (pNGBs) for SO(N + 1) → SO(N) spontaneous and explicit symmetry breaking. We determine the magnitude of explicit symmetry breaking consistent with an EFT description of the effective potential
Fotis Koutroulis, Matthew McCullough, Marco Merchand, Stefan Pokorski, Kazuki Sakurai   +4 more
doaj   +1 more source

Pinning of longitudinal phonons in holographic spontaneous helices

Journal of High Energy Physics, 2018
We consider the spontaneous breaking of translational symmetry and identify the associated Goldstone mode — a longitudinal phonon — in a holographic model with Bianchi VII helical symmetry. For the first time in holography, we observe the pinning of this
Tomas Andrade, Matteo Baggioli, Alexander Krikun, Napat Poovuttikul   +3 more
doaj   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Hidden symmetry protection for surface plasmon polaritons

Physical Review Research, 2023
In this study, we reveal the general mechanism of hidden symmetry protection for surface plasmon polaritons (SPPs). SPPs are protected at zero frequency when the dielectric-metal interface exhibits an exceptional symmetry.
Yosuke Nakata, Toshihiro Nakanishi, Ryo Takahashi, Fumiaki Miyamaru, Shuichi Murakami   +4 more
doaj   +1 more source