Results 41 to 50 of about 8,211 (262)

Quantum Strong-To-Weak Spontaneous Symmetry Breaking in Decohered One-Dimensional Critical States

open access: yesPRX Quantum
Symmetry breaking has been a central theme in classifying quantum phases and phase transitions. Recently, this concept has been extended to the mixed states of open systems, attracting considerable attention due to the emergence of novel physics beyond ...
Yuxuan Guo (郭雨轩)   +2 more
doaj   +1 more source

Liouvillian spectral collapse in the Scully-Lamb laser model

open access: yesPhysical Review Research, 2021
Phase transitions of thermal systems and the laser threshold were first connected more than forty years ago. Despite the nonequilibrium nature of the laser, the Landau theory of thermal phase transitions, applied directly to the Scully-Lamb laser model ...
Fabrizio Minganti   +3 more
doaj   +1 more source

Symmetry Rebreaking in an Effective Theory of Quantum Coarsening

open access: yesPhysical Review Letters
We present a simple theory accounting for two central observations in a recent experiment on quantum coarsening and collective dynamics on a programmable quantum simulator [Manovitz , .]: an apparent speeding up of the coarsening process as the phase transition is approached and persistent oscillations of the order parameter after quenches within the ...
Federico Balducci   +2 more
openaire   +4 more sources

Bosons after Symmetry Breaking in Quantum Field Theory

open access: yes, 2007
56 pages,8 ...
Fujita, Takehisa   +2 more
openaire   +2 more sources

Quantum Field Theory of Graphene with Dynamical Partial Symmetry Breaking

open access: yesJournal of Modern Physics, 2014
The quantum field theory approach has been proposed for the description of graphene electronic properties. It generalizes massless Dirac fermion model and is based on the Dirac-Hartree-Fock self-consistent field approximation and assumption on antiferromagnetic ordering of graphene lattice.
Halina V. Grushevskaya, George Krylov
openaire   +2 more sources

Graphene Quantum Dot‐Induced Microstrain for Framework Stabilization of High‐Entropy Prussian Blue Analog in High‐Current Alkaline Hydrogen Evolution Reaction

open access: yesAdvanced Functional Materials, EarlyView.
The intrinsic distortion‐rich lattice of HEPBA with GQD‐enabled microstrain engineering establishes a mechanistic route toward high‐performance alkaline hydrogen evolution reaction. HEPBA inherently feature heterogeneous local coordination environments arising from multimetal incorporation, while properly introducing GQD during coprecipitation ...
Mia Rinawati   +10 more
wiley   +1 more source

Programmable 2D Magnetic Clusterphenes With High Curie Temperature and Strong Magnetic Anisotropy via Cluster Assembly and Ligand Synergy

open access: yesAdvanced Functional Materials, EarlyView.
Programmable 2D magnetic clusterphenes are realized through a ligand‐mediated cluster‐assembly strategy. Direct linking of magnetic superatomic clusters enhances electron delocalization and symmetry breaking, enabling the concurrent strengthening of magnetic exchange interactions and spin–orbit coupling.
Junxiang Fu   +13 more
wiley   +1 more source

Percolation induced effects in two-dimensional coined quantum walks: analytic asymptotic solutions

open access: yesNew Journal of Physics, 2014
Quantum walks on graphs can model physical processes and serve as efficient tools in quantum information theory. Once we admit random variations in the connectivity of the underlying graph, we arrive at the problem of percolation, where the long-time ...
B Kollár, J Novotný, T Kiss, I Jex
doaj   +1 more source

AdS2 holography and effective QFT

open access: yesJournal of High Energy Physics, 2023
We discuss AdS2 quantum gravity from an unconventional perspective that emphasizes bulk geometry. In our approach, AdS2 has no boundary, there are no divergences that require renormalization, and the dilaton of JT-gravity can be omitted altogether.
Sangmin Choi, Finn Larsen
doaj   +1 more source

Bismuth‐Based Photocatalysts for Water Remediation: Design Strategies, Mechanisms, and Challenges

open access: yesAdvanced Functional Materials, EarlyView.
This review highlights representative design strategies for bismuth‐based semiconductor photocatalysts in solar‐driven water purification. Emphasis is placed on electronic structure regulation, oxygen‐vacancy engineering, and interfacial coupling to enable efficient full‐spectrum light utilization, improved charge separation, and selective oxidation in
Shan Liu   +9 more
wiley   +1 more source

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