Results 31 to 40 of about 1,441 (262)

An Elementary Notion of Gauge Equivalence [PDF]

open access: yes, 2007
An elementary notion of gauge equivalence is introduced that does not require any Lagrangian or Hamiltonian apparatus. It is shown that in the special case of theories, such as general relativity, whose symmetries can be identified with spacetime ...
Belot, Gordon
core  

Concepts of Symmetry in the Work of Wolfgang Pauli [PDF]

open access: yes, 2007
"Symmetry" was one of the most important methodological themes in 20th-century physics and is probably going to play no lesser role in physics of the 21st century.
Giulini, Domenico, Giulini, D.
core   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

Manifestation of Hidden Symmetries in Baryonic Matter: From Finite Nuclei to Neutron Stars

open access: yes, 2021
International audienceWhen hadron-quark continuity is formulated in terms of a topology change at a density higher than twice the nuclear matter density (n0), the core of massive compact stars can be described in terms of quasiparticles of fractional ...
Rho, Mannque   +3 more
core   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Large charge, semiclassics and superfluids : from broken symmetries to conformal field theories [PDF]

open access: yes, 2020
This thesis explores the application of semiclassical methods in the study of states with large quantum numbers for theories invariant under internal symmetries. In the first part of the thesis, we study zero-temperature superfluids.
Cuomo, Gabriel Francisco
core   +1 more source

Soft motions encoded by the fold and mediated by conserved hinge sites drive V‐ATPase allosteric machinery and autoinhibition

open access: yesFEBS Letters, EarlyView.
Vacuolar H+‐ATPase (V‐ATPase) is a multisubunit rotary proton pump that acidifies intracellular compartments. Using elastic network models, we identified conserved hinge residues that govern its large‐scale functional motions. We show that intrinsically encoded ‘soft modes’ drive critical functional transitions, including rotary catalysis and ...
Diksha Parwana   +3 more
wiley   +1 more source

Spinors, embeddings and gravity

open access: yes, 1988
This thesis is concerned with the theory of spinors, embeddings and everywhere invariance with applications to general relativity. The approach is entirely geometric with particular emphasis on the use of natural structures.
Swift, S.T, Swift, Simon
core   +1 more source

Relations among polarized and unpolarized splitting functions beyond leading order

open access: yes, 1998
The role of various symmetries in the evaluation of splitting functions and coefficient functions is discussed. The scale invariance in hard processes is known to be a guiding tool to understand the dynamics.
van Neerven, W. L.   +2 more
core   +2 more sources

Duality defects in D n -type Niemeier lattice CFTs

open access: yesJournal of High Energy Physics
We discuss the construction of duality defects in c = 24 meromorphic CFTs that correspond to Niemeier lattices. We will illustrate our constructions for the D n -type lattices.
Sachin Grover   +2 more
doaj   +1 more source

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