Zobrazeno 1 - 10
of 132
pro vyhledávání: '"A. E. Feiguin"'
Autor:
W. J. Gannon, I. A. Zaliznyak, L. S. Wu, A. E. Feiguin, A. M. Tsvelik, F. Demmel, Y. Qiu, J. R. D. Copley, M. S. Kim, M. C. Aronson
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-10 (2019)
The behavior of quantum magnets depends strongly on the effective dimensionality of the inter-spin interactions. Here the authors tune the influence of two- and three-dimensional couplings in Yb2Pt2Pb with a magnetic field and hence control the behav
Externí odkaz:
https://doaj.org/article/7d25e70670c448399108176301da77ee
Autor:
S. Haravifard, D. Graf, A. E. Feiguin, C. D. Batista, J. C. Lang, D. M. Silevitch, G. Srajer, B. D. Gaulin, H. A. Dabkowska, T. F. Rosenbaum
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-6 (2016)
Spin 1/2 dimer systems in an external magnetic field behave as a lattice gas of hard-core bosons, and can undergo condensation. Here the authors show in SrCu2(BO3)2that new fractionally crystallized states are not only possible, but also tuneable wit
Externí odkaz:
https://doaj.org/article/10ae66b1f66840f9bbc85162a84206e7
Publikováno v:
SciPost Physics, Vol 15, Iss 4, p 166 (2023)
While new light sources allow for unprecedented resolution in experiments with X-rays, a theoretical understanding of the scattering cross-section is lacking. In the particular case of strongly correlated electron systems, numerical techniques are qu
Externí odkaz:
https://doaj.org/article/203d0cb600734faabdb1146c801df28a
Publikováno v:
SciPost Physics, Vol 13, Iss 3, p 060 (2022)
We study a generalized quantum spin ladder with staggered long range interactions that decay as a power-law with exponent $\alpha$. Using large scale quantum Monte Carlo (QMC) and density matrix renormalization group (DMRG) simulations, we show th
Externí odkaz:
https://doaj.org/article/5928a27f00764df8ba7f40aa4f802e0d
Publikováno v:
SciPost Physics, Vol 10, Iss 5, p 110 (2021)
We study the nature of the excitations of an antiferromagnetic (AFM) Heisenberg chain with staggered long range interactions using the time-dependent density matrix renormalization group method and by means of a multi-spinon approximation. The chain
Externí odkaz:
https://doaj.org/article/e70ba5ef83f04f3095b7cb9cff88c23a
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043228 (2020)
We consider a mesoscopic superconducting island hosting multiple pairs of Majorana zero-energy modes. The Majorana island consists of multiple p-wave wires connected together by a trivial (s-wave) superconducting backbone and is characterized by an o
Externí odkaz:
https://doaj.org/article/6a765b47c6ca44b5a81eb5812696901c
Publikováno v:
Applied Sciences, Vol 10, Iss 7, p 2542 (2020)
We introduce a computational approach to study porphyrin-like transition metal complexes, bridging density functional theory and exact many-body techniques, such as the density matrix renormalization group (DMRG). We first derive a multi-orbital Ande
Externí odkaz:
https://doaj.org/article/fe9deea3875e47e391b168aabba487d5
Publikováno v:
Physical Review B. 106
Quantum Monte-Carlo simulations of hybrid quantum-classical models such as the double exchange Hamiltonian require calculating the density of states of the quantum degrees of freedom at every step. Unfortunately, the computational complexity of exact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1728e59c05d2814f893d69752eef0fd8
https://doi.org/10.1103/physrevb.106.205112
https://doi.org/10.1103/physrevb.106.205112
Autor:
Hongwei Chen, Sathya R. Chitturi, Rajan Plumley, Lingjia Shen, Nathan C. Drucker, Nicolas Burdet, Cheng Peng, Sougata Mardanya, Daniel Ratner, Aashwin Mishra, Chun Hong Yoon, Sanghoon Song, Matthieu Chollet, Gilberto Fabbris, Mike Dunne, Silke Nelson, Mingda Li, Aaron Lindenberg, Chunjing Jia, Youssef Nashed, Arun Bansil, Sugata Chowdhury, Adrian E. Feiguin, Joshua J. Turner, Jana B. Thayer
The advent of next-generation X-ray free electron lasers will be capable of delivering X-rays at a repetition rate approaching 1 MHz continuously. This will require the development of data systems to handle experiments at these type of facilities, es
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c49ed28e3682d33778cda08103f27a0f
http://arxiv.org/abs/2210.10137
http://arxiv.org/abs/2210.10137
Autor:
Chun Yang, Adrian E. Feiguin
We present a comprehensive study of a one-dimensional two-orbital model at and below quarter-filling that realizes a number of unconventional phases. In particular, we find an excitonic density wave in which excitons quasi-condense with finite center
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ac33df37fb74317a376d0375951b18f
http://arxiv.org/abs/2209.04094
http://arxiv.org/abs/2209.04094