Results 11 to 20 of about 564,052 (257)
Spontaneous Symmetry Breaking and Chiral Symmetry [PDF]
AIP Conference Proceedings, 2000 In this introductory lecture, some basic features of the spontaneous symmetry breaking are discussed. More specifically, $\sigma $-model, non-linear realization, and some examples of spontaneous symmetry breaking in the non-relativistic system are ...
Li, Ling-Fong
core +6 more sources
Symmetry Breaking Constraints: Recent Results [PDF]
arXiv, 2012 Symmetry is an important problem in many combinatorial problems. One way of dealing with symmetry is to add constraints that eliminate symmetric solutions. We survey recent results in this area, focusing especially on two common and useful cases: symmetry breaking constraints for row and column symmetry, and symmetry breaking constraints for ...
Walsh, Toby
arxiv +4 more sources
Symmetries and symmetry-breaking in arithmetic graphs. [PDF]
Heliyon, 2023 In this paper, we study symmetries and symmetry-breaking of the arithmetic graph of a composite number m, denoted by Am. We first study some properties such as the distance between vertices, the degree of a vertex and the number of twin classes in the arithmetic graphs.
Shah A, Javaid I, Rehman SU.
europepmc +4 more sources
Electronic Proceedings in Theoretical Computer Science, 2010 A well-known result by Palamidessi tells us that πmix(the π-calculus with mixed choice) is more expressive than πsep(its subset with only separate choice). The proof of this result analyses their different expressive power concerning leader election in symmetric networks.
Peters, Kirstin, Nestmann, Uwe
openaire +7 more sources
Symmetries and symmetry breaking [PDF]
Nuclear Physics A, 2001 In understanding the world of matter, the introduction of symmetry principles following experimentation or using the predictive power of symmetry principles to guide experimentation is most profound. The conservation of energy, linear momentum, angular momentum, charge, and CPT involve fundamental symmetries.
W. T. H. van Oers, W. T. H. van Oers
openaire +5 more sources
Bottom quark and tau lepton masses in a toy $$\textrm{SU}(6)$$ SU ( 6 ) model
European Physical Journal C: Particles and Fields, 2023 We study a toy $$\textrm{SU}(6)$$ SU ( 6 ) model with the symmetry breaking pattern of the extended 331 symmetry of $$\textrm{SU}(3)_c \otimes \textrm{SU}(3)_W \otimes \textrm{U}(1)_X$$ SU ( 3 ) c ⊗ SU ( 3 ) W ⊗ U ( 1 ) X .
Ning Chen, Ying-nan Mao, Zhaolong Teng
doaj +1 more source
Effects of symmetry-breaking on electromagnetic backscattering
Scientific Reports, 2021 Systems with a discrete rotational symmetry $$2\pi /n$$ 2 π / n where $$n\ge 3$$ n ≥ 3 that also have electromagnetic duality symmetry exhibit zero backscattering.
Mohamed Ismail Abdelrahman +3 more
doaj +1 more source
Selection rules for breaking selection rules
New Journal of Physics, 2021 Floquet systems often exhibit dynamical symmetries (DS) that govern the time-dependent dynamics and result in selection rules. When a DS is broken, selection rule deviations are expected.
Matan Even Tzur +3 more
doaj +1 more source
Semaphorin Breaks Symmetry [PDF]
Neuron, 2011 Axon-dendrite polarity is likely instructed by extrinsic cues in the developing nervous system, though the mechanisms governing this process remain to be fully elucidated. In this issue of Neuron, Shelly et al. show that the axon guidance cue Semaphorin 3A can promote dendrite growth by inhibiting axon specification.
Audrey S. Howell, Kang Shen
openaire +3 more sources
Visualizing the Breaking of Symmetry [PDF]
Developmental Cell, 2006 Axon specification is a hallmark of neuron polarization. Although several models have been proposed, few studies have provided clues about polarization events in real time. Using time-lapse imaging, a recent study described visualizing symmetry-breaking events during this process.
Bing Ye, Yuh Nung Jan
openaire +3 more sources