Results 81 to 90 of about 2,479,484 (248)

The Dicke Quantum Phase Transition with a Superfluid Gas in an Optical Cavity

open access: yes, 2010
A phase transition describes the sudden change of state in a physical system, such as the transition between a fluid and a solid. Quantum gases provide the opportunity to establish a direct link between experiment and generic models which capture the ...
Baumann, Kristian   +3 more
core   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Skyrmion crystals: Dynamics and phase transition

open access: yesAIP Advances, 2018
We study a crystal of skyrmions generated on a square lattice using a ferromagnetic exchange interaction and a Dzyaloshinskii-Moriya interaction between nearest-neighbors under an external magnetic field.
H. T. Diep   +2 more
doaj   +1 more source

The thermodynamics for a hadronic gas of fireballs with internal color structures and chiral fields

open access: yes, 2008
The thermodynamical partition function for a gas of color-singlet bags consisting of fundamental and adjoint particles in both $U(N_c)$ and $SU(N_c)$ group representations is reviewed in detail.
Carsten Greiner   +5 more
core   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

open access: yesFEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto   +3 more
wiley   +1 more source

Axionlike particle-assisted supercooling chiral phase transition in QCD: identifying Coleman-Weinberg type-chiral phase transition in QCD-like scenarios

open access: yesJournal of High Energy Physics
We propose a new scenario to realize the Coleman-Weinberg (CW) type chiral phase transition in the QCD thermal history. This scenario predicts a heavy axionlike particle (ALP) with mass ~ 5 MeV, consistently with the current experimental and cosmological
Zheng-liang Jiang   +5 more
doaj   +1 more source

Instability of many-body localized systems as a phase transition in a nonstandard thermodynamic limit

open access: yes, 2019
The many-body localization (MBL) phase transition is not a conventional thermodynamic phase transition. Thus to define the phase transition one should allow the possibility of taking the limit of an infinite system in a way that is not the conventional ...
Gopalakrishnan, Sarang, Huse, David A.
core   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Hamiltonian limited valence model for liquid polyamorphism

open access: yesCondensed Matter Physics
Liquid-liquid phase transitions have been found experimentally or by computer simulations in many compounds such as water, hydrogen, sulfur, phosphorus, carbon, silica, and silicon.
S. V. Buldyrev
doaj   +1 more source

Winding numbers of phase transition points for one-dimensional topological systems

open access: yes, 2015
We study topological properties of phase transition points of one-dimensional topological quantum phase transitions by assigning winding numbers defined on closed circles around the gap closing points in the parameter space of momentum and a transition ...
Chen, Shu, Li, Linhu, Yang, Chao
core   +1 more source

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