Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Kevin Beach"'
Autor:
Khagendra Adhikari, Kevin Beach
Publikováno v:
Physical Review B. 104
The dynamical behavior of a quantum many-particle system is characterized by the lifetime of its excitations. When the system is perturbed, observables of any non-conserved quantity decay exponentially, but those of a conserved quantity relax to equi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::445855b2407599f2a246fe4afe8ff026
https://doi.org/10.1103/physrevb.104.115149
https://doi.org/10.1103/physrevb.104.115149
Autor:
Kevin Beach, Sudeep Adhikari
Publikováno v:
Physical Review Research. 2
The structural dynamics of a biopolymer is governed by a process of diffusion through its conformational energy landscape. In pulling experiments using optical tweezers, features of the energy landscape can be extracted from the probability distribut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10974fe0b379f562cc183a892426778f
https://doi.org/10.1103/physrevresearch.2.023276
https://doi.org/10.1103/physrevresearch.2.023276
Autor:
Kevin Beach, Khagendra Adhikari
We introduce a generalization of the Fredkin spin chain with tunable three-body interactions expressed in terms of conventional spin-half operators. Of the model's two free parameters, one controls the preference for Ising antiferromagnetism and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ca6406eaca33febf7ab4cfb3814c13f
Autor:
Kevin Beach, Khagendra Adhikari
The Fredkin model describes a spin-half chain segment subject to three-body, correlated-exchange interactions and twisted boundary conditions. The model is frustration-free, and its ground state wave function is known exactly. Its low-energy physics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3deead85fe999396f7d78b205c5b78cf
Publikováno v:
Physical Review B. 95
Interaction-driven topological phase transitions in Dirac semimetals are investigated by means of large-scale quantum Monte Carlo (QMC) simulations. The interaction among Dirac fermions is introduced by coupling them to Ising spins that realize the q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b90afad547fa56972da5b000e7da34f
https://doi.org/10.1103/physrevb.95.085110
https://doi.org/10.1103/physrevb.95.085110
Publikováno v:
Biophysical Journal. 107:1647-1653
The conformational diffusion coefficient for intrachain motions in biopolymers, D, sets the timescale for structural dynamics. Recently, force spectroscopy has been applied to determine D both for unfolded proteins and for the folding transitions in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea0b750caea497ffff8e544ee473953d
https://doi.org/10.1016/j.bpj.2014.08.007
https://doi.org/10.1016/j.bpj.2014.08.007
Publikováno v:
Annals of Physics. 339:181-207
We provide a detailed description of a general procedure by which a nano/micro-mechanical resonator can be calibrated using its thermal motion. A brief introduction to the equations of motion for such a resonator is presented, followed by a detailed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::523c4f9b1598888187b00e9e6ede7388
https://doi.org/10.1016/j.aop.2013.08.003
https://doi.org/10.1016/j.aop.2013.08.003
Autor:
Kevin Beach, Keola Wierschem
The strange correlator [Phys. Rev. Lett. 112, 247202 (2014)] has been proposed as a measure of symmetry protected topological order in one- and two-dimensional systems. It takes the form of a spin-spin correlation function, computed as a mixed overla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ad7786b44b4afb39d9909b94383dcc8
Publikováno v:
Canadian Journal of Physics. 90:889-893
The superconducting pairing instability — as determined by a divergence of the two-particle susceptibility — is obtained in the mean field (BCS) approximation in the thermodynamic limit. The usual practice is to examine this property for a finite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6d90909a737fe51de101874a856dd83
https://doi.org/10.1139/p2012-082
https://doi.org/10.1139/p2012-082
We show that the particular distribution of mass deposited on the surface of a nanomechanical resonator can be estimated by tracking the evolution of the device's resonance frequencies during the process of desorption. The technique, which relies on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24fe19796122ce29fa38ebdd14f93f2b