Results 51 to 60 of about 1,385,865 (356)
Symmetry Breaking in Biology [PDF]
Cold Spring Harbor Perspectives in Biology, 2009 Symmetry breaking is essential for cell movement, polarity, and developmental patterning. Amplification of initial asymmetry is key to the conserved mechanisms involved.
Bruce Bowerman, Rong Li
openaire +3 more sources
Observation of parity-time symmetry breaking in a single-spin system [PDF]
Science, 2018 Breaking symmetry with single spins The energetics of quantum systems are typically described by Hermitian Hamiltonians. The exploration of non-Hermitian physics in classical parity-time (PT)–symmetric systems has provided fertile theoretical and ...
Yang Wu +7 more
semanticscholar +1 more source
Breaking symmetry, breaking ground [PDF]
Journal of Physics A: Mathematical and Theoretical, 2016 I give a short commentary on a seminal article by T W B Kibble in 1976, "Topology of cosmic domains and strings".
openaire +4 more sources
Symmetry Restoration and Breaking at Finite Temperature: An Introductory Review
Symmetry, 2020 Symmetries at finite temperature are of great importance to understand dynamics of spontaneous symmetry breaking phenomena, especially phase transitions in early Universe.
E. Senaha
semanticscholar +1 more source
Tunneling potentials for the tunneling action: gauge invariance
Journal of High Energy Physics, 2022 We formulate a procedure to obtain a gauge-invariant tunneling rate at zero temperature using the recently developed tunneling potential approach. This procedure relies on a consistent power counting in gauge coupling and a derivative expansion.
Suntharan Arunasalam +1 more
doaj +1 more source
Symmetries and symmetry-breaking in arithmetic graphs
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.
Aqsa Shah +2 more
openaire +3 more sources
Breaking Symmetry on Time [PDF]
Developmental Cell, 2007 The habenular nuclei are a conserved relay center of telencephalic function, and they display bilateral asymmetry in many vertebrates. How this asymmetry is constructed in response to local lateralized cues remains poorly understood. A paper by Aizawa et al.
openaire +3 more sources
Division algebraic symmetry breaking
Physics Letters B, 2022 Reframing certain well-known particle models in terms of normed division algebras leads to two new results for BSM physics.(1) We identify a sequence of complex structures which induces a cascade of breaking symmetries: Spin(10) ↦ Pati-Salam ↦ Left-Right
N. Furey, M.J. Hughes
doaj
A stepwise emergence of evolution in the RNA world
FEBS Letters, EarlyView.How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley +1 more source
Boundary Symmetry Breaking in CFT and the string order parameter
Journal of High Energy Physics, 2023 We consider the ground state of a one-dimensional critical quantum system carrying a global symmetry in the bulk, which is explicitly broken by its boundary conditions. We probe the system via a string-order parameter, showing how it detects the symmetry
Riccarda Bonsignori +2 more
doaj +1 more source