Results 91 to 100 of about 287,206 (338)
Spontaneous Breaking of the Quantum Superposition [PDF]
arXiv, 2007 In this work spontaneous (non-dynamical) breaking (effective hiding) of the unitary quantum mechanical dynamical symmetry (superposition) is considered. It represents an especial but very interesting case of the general formalism of the spontaneous symmetry breaking (effective hiding).
arxiv
Advanced Materials, EarlyView.The rise of lead halide perovskite semiconductors has enabled high‐performance LEDs with internal quantum efficiencies approaching 100%. In order to further enhance the external quantum efficiencies limited by light outcoupling effects, in this account, the strategies for reducing energy dissipation through the substrate, waveguide, and evanescent ...
Tommaso Marcato +2 more
wiley +1 more source
Dual Scale Invariance Spontaneous Symmetry Breaking and Turbulence [PDF]
arXiv, 2017 We discuss spontaneous symmetry breaking of dual (space and time) scale invariance in the context of turbulence.
arxiv
Advanced Materials, EarlyView.This review explores how in situ and operando spectroscopic techniques reveal the real‐time behavior of reticular materials, including MOFs and COFs. These methods track material formation and functionalization, structural changes, defect formation, dynamic responses to external triggers, and catalytic processes.
Bettina Baumgartner +4 more
wiley +1 more source
Assumption of nonvanishingness of vacuum expectation of the scalar field for spontaneous symmetry breaking is superfluous [PDF]
arXiv, 1997 For spontaneous breaking of global or gauge symmetry, it is superfluous to assume that the vacuum expectation value of the scalar field manifesting the symmetry is nonvanishing. The vacuum with spontaneous symmetry breaking simply corresponds to nonzero number of particles of one or more components of the real scalar field.
arxiv
Control spontaneous symmetry breaking of photonic chirality with reconfigurable anomalous nonlinearity [PDF]
arXiv, 2022 Spontaneous symmetry breaking in nonlinear systems provides a unified method to understand vastly different phenomena, ranging from Higgs mechanism [1] and superconductivity [2] to ecological stability [3] and genome generation [4]. Spontaneous symmetry breaking is typically considered as the intrinsic property of nonlinear systems with fixed ...
arxiv
Spray‐Assisted Fabrication of Cellulose Photonic Pigments on Superhydrophobic Surfaces
Advanced Materials, EarlyView.A method to directly produce structurally colored microparticles by drying cholesteric cellulose nanocrystal microdroplets on a superhydrophobic surface is reported. This approach has several key advantages that can unlock large‐scale fabrication of sustainable photonic pigments, including exploiting existing industrial techniques (e.g. aerosolization),
Jianing Song +7 more
wiley +1 more source
symmetry broken supersolid in spin–orbit-coupled Bose–Einstein condensates
New Journal of PhysicsSupersolid is an exotic state of matter characterized by both superfluid properties and periodic particle density modulation, due to spontaneous breaking of U (1) gauge symmetry and spatial translation symmetry, respectively. For conventional supersolids,
Ze-Hong Guo, Qizhong Zhu
doaj +1 more source
Higher-form symmetries and spontaneous symmetry breaking [PDF]
arXiv, 2018 We study various aspects of spontaneous symmetry breaking in theories that possess higher-form symmetries, which are symmetries whose charged objects have a dimension $p>0$. We first sketch a proof of a higher version of Goldstone's theorem, and then discuss how boundary conditions and gauge-fixing issues are dealt with in theories with spontaneously ...
arxiv
Frozen by Heating: Temperature Controlled Dynamic States in Droplet Microswimmers
Advanced Materials, EarlyView.In the design of smart materials based on active agents or microswimmers, the gaits or motile states of the agents are to be controlled, preferably by external parameters that do not require modifying the composition of the system. A facile, universal parameter is temperature.
Prashanth Ramesh +5 more
wiley +1 more source