Results 81 to 90 of about 1,462,493 (311)

The Low-Energy Fixed Points of Random Quantum Spin Chains

open access: yes, 1996
The one-dimensional isotropic quantum Heisenberg spin systems with random couplings and random spin sizes are investigated using a real-space renormalization group scheme. It is demonstrated that these systems belong to a universality class of disordered
A. Furusaki   +30 more
core   +1 more source

Infrared Fixed Points and Fixed Lines for Couplings in the Chiral Lagrangian

open access: yes, 2000
9 pages, 2 encapsulated postscript figures, uses epsfig.sty; 2 more postscript figures ...
Atance, Mario, Schrempp, Barbara
openaire   +2 more sources

Coupled fixed point theorems for partially contractive mappings [PDF]

open access: yesFixed Point Theory and Applications, 2012
Recently, some authors have started to generalize fixed point theorems for contractive mappings in a class of generalized metric spaces in which the self-distance need not be zero. These spaces, partial metric spaces, were first introduced by Matthews in 1994.
openaire   +2 more sources

B cell mechanobiology in health and disease: emerging techniques and insights into therapeutic responses

open access: yesFEBS Letters, EarlyView.
B cells sense external mechanical forces and convert them into biochemical signals through mechanotransduction. Understanding how malignant B cells respond to physical stimuli represents a groundbreaking area of research. This review examines the key mechano‐related molecules and pathways in B lymphocytes, highlights the most relevant techniques to ...
Marta Sampietro   +2 more
wiley   +1 more source

Quadruple fixed point theorems for nonlinear contractions on partial metric spaces

open access: yesApplied General Topology, 2014
The notion of coupled fixed point was introduced by Guo and Laksmikantham [12]. Later Gnana Bhaskar and Lakshmikantham in [11] investigated the coupled fixed points in the setting of partially ordered set by defining the notion of mixed monotone property.
Erdal Karapinar, Kenan Tas
doaj   +1 more source

Manipulating energy and spin currents in nonequilibrium systems of interacting qubits

open access: yes, 2013
We consider generic interacting chain of qubits, which are coupled at the edges to baths of fixed polarizations. We can determine the nonequilibrium steady states, described by the fixed point of the Lindblad Master Equation.
Livi, Roberto, Popkov, Vladislav
core   +1 more source

Coupled Models $WD_{3}$. Their Fixed Points

open access: yes, 2001
7 pages, 6 figures, Proceedings of the conference "Statistical Field Theory", Como 2001.
Dotsenko, Vladimir S.   +2 more
openaire   +2 more sources

Evolutionary interplay between viruses and R‐loops

open access: yesFEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi   +4 more
wiley   +1 more source

Disruption of SETD3‐mediated histidine‐73 methylation by the BWCFF‐associated β‐actin G74S mutation

open access: yesFEBS Letters, EarlyView.
The β‐actin G74S mutation causes altered interaction of actin with SETD3, reducing histidine‐73 methylation efficiency and forming two distinct actin variants. The variable ratio of these variants across cell types and developmental stages contributes to tissue‐specific phenotypical changes. This imbalance may impair actin dynamics and mechanosensitive
Anja Marquardt   +8 more
wiley   +1 more source

Coupled Fixed Point Theorems for Some Type of Contraction Mappings in b-Cone and b-Theta Cone Metric Spaces

open access: yesJournal of Mathematics, 2021
This paper proves the existence of a unique coupled fixed point of some type of contraction mappings defined on a complete b-cone and b-theta cone metric spaces; consequently, it extends and generalizes many previous coupled fixed point theorems.
Sahar Mohamed Ali Abou Bakr
doaj   +1 more source

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