Results 81 to 90 of about 1,657,122 (349)
Breaking discrete symmetries in the effective field theory of inflation [PDF]
, 2015 We study the phenomenon of discrete symmetry breaking during the inflationary epoch, using a model-independent approach based on the effective field theory of inflation.
Dario Cannone +2 more
semanticscholar +1 more source
Discrete Time Crystals in the Absence of Manifest Symmetries or Disorder in Open Quantum Systems. [PDF]
Physical Review Letters, 2018 We establish a link between metastability and a discrete time-crystalline phase in a periodically driven open quantum system. The mechanism we highlight requires neither the system to display any microscopic symmetry nor the presence of disorder, but ...
F. M. Gambetta +4 more
semanticscholar +1 more source
Discrete Symmetries/Discrete Theories
, 2012 Dynamical, metastable supersymmetry breaking appears to be a generic phenomena in supersymmetric field theories. It's simplest implementation is within the so-called "retrofitted O'Raifeartaigh Models". While seemingly flexible, model building in these theories is significantly constrained. In gauge-mediated versions, if the approximate $R$ symmetry of
Bose, Milton, Dine, Michael
openaire +2 more sources
Patterns of remnant discrete symmetries [PDF]
Journal of High Energy Physics, 2009 14 pages, 2 figures, a related Mathematica package can be downloaded from http://einrichtungen.physik.tu-muenchen.de/T30e/codes/DiscreteBreaking/
Petersen, Björn +2 more
openaire +6 more sources
Advanced Engineering Materials, EarlyView.Ti‐6Al‐4V samples produced by laser‐powder bed fusion are tested for static and dynamic mechanical properties to systematically evaluate the effects of surface roughness and internal porosity when using productivity parameters. The most detrimental impact to fatigue is caused by surface roughness, lack of fusion and keyhole porosity in descending order.
Julian Emanuel Gunther Schulz +4 more
wiley +1 more source
Constraints on discrete global symmetries in quantum gravity
Journal of High Energy Physics, 2021 The question whether global symmetries can be realized in quantum-gravity-matter-systems has far-reaching phenomenological consequences. Here, we collect evidence that within an asymptotically safe context, discrete global symmetries of the form ℤ n , n >
Passant Ali +3 more
doaj +1 more source
Lie discrete symmetries of lattice equations
, 2003 We extend two of the methods previously introduced to find discrete symmetries of differential equations to the case of difference and differential-difference equations.
Decio Levi +15 more
core +1 more source
Coalgebra symmetry for discrete systems
Journal of Physics A: Mathematical and Theoretical, 2023 Abstract In this paper we introduce the notion of coalgebra symmetry for discrete systems. With this concept we prove that all discrete radially symmetric systems in standard form are quasi-integrable and that all variational discrete quasi-radially symmetric systems in standard form are Poincaré–Lyapunov–Nekhoroshev maps of order N − 2,
G Gubbiotti, D Latini, B K Tapley
openaire +3 more sources
Advanced Engineering Materials, EarlyView.Steel samples are investigated using complementary simulations and measurements. Transmission electron microscopy in bright‐field mode, combined with energy‐dispersive X‐ray spectroscopy maps for titanium and niobium, reveals distinct particle populations. Simulations reproduce these in size and composition.
Marc Laub +3 more
wiley +1 more source
Dirac neutrinos and anomaly-free discrete gauge symmetries
, 2014 Relying on Dirac neutrinos allows an infinity of anomaly-free discrete gauge symmetries to be imposed on the Supersymmetric Standard Model, some of which are GUT-compatible.Comment: 24 pages, minor changes, existence of flipped discrete gauge ...
Christoph Luhn +3 more
core +1 more source