Zobrazeno 1 - 10
of 349
pro vyhledávání: '"Pollmann F"'
Publikováno v:
Nat. Commun 13, 3813 (2022)
The S=3/2 Kitaev honeycomb model (KHM) is a quantum spin liquid (QSL) state coupled to a static Z$_2$ gauge field. Employing an SO(6) Majorana representation of spin 3/2's, we find an exact representation of the conserved plaquette fluxes in terms of
Externí odkaz:
http://arxiv.org/abs/2107.13364
Autor:
Satzinger, K. J., Liu, Y., Smith, A., Knapp, C., Newman, M., Jones, C., Chen, Z., Quintana, C., Mi, X., Dunsworth, A., Gidney, C., Aleiner, I., Arute, F., Arya, K., Atalaya, J., Babbush, R., Bardin, J. C., Barends, R., Basso, J., Bengtsson, A., Bilmes, A., Broughton, M., Buckley, B. B., Buell, D. A., Burkett, B., Bushnell, N., Chiaro, B., Collins, R., Courtney, W., Demura, S., Derk, A. R., Eppens, D., Erickson, C., Farhi, E., Foaro, L., Fowler, A. G., Foxen, B., Giustina, M., Greene, A., Gross, J. A., Harrigan, M. P., Harrington, S. D., Hilton, J., Hong, S., Huang, T., Huggins, W. J., Ioffe, L. B., Isakov, S. V., Jeffrey, E., Jiang, Z., Kafri, D., Kechedzhi, K., Khattar, T., Kim, S., Klimov, P. V., Korotkov, A. N., Kostritsa, F., Landhuis, D., Laptev, P., Locharla, A., Lucero, E., Martin, O., McClean, J. R., McEwen, M., Miao, K. C., Mohseni, M., Montazeri, S., Mruczkiewicz, W., Mutus, J., Naaman, O., Neeley, M., Neill, C., Niu, M. Y., O'Brien, T. E., Opremcak, A., Pató, B., Petukhov, A., Rubin, N. C., Sank, D., Shvarts, V., Strain, D., Szalay, M., Villalonga, B., White, T. C., Yao, Z., Yeh, P., Yoo, J., Zalcman, A., Neven, H., Boixo, S., Megrant, A., Chen, Y., Kelly, J., Smelyanskiy, V., Kitaev, A., Knap, M., Pollmann, F., Roushan, P.
Publikováno v:
Science 374, 1237-1241 (2021)
The discovery of topological order has revolutionized the understanding of quantum matter in modern physics and provided the theoretical foundation for many quantum error correcting codes. Realizing topologically ordered states has proven to be extre
Externí odkaz:
http://arxiv.org/abs/2104.01180
Autor:
Abanin, D. A., Bardarson, J. H., De Tomasi, G., Gopalakrishnan, S., Khemani, V., Parameswaran, S. A., Pollmann, F., Potter, A. C., Serbyn, M., Vasseur, R.
Publikováno v:
Annals of Physics 427, 168415 (2021)
We re-examine attempts to study the many-body localization transition using measures that are physically natural on the ergodic/quantum chaotic regime of the phase diagram. Using simple scaling arguments and an analysis of various models for which ri
Externí odkaz:
http://arxiv.org/abs/1911.04501
Publikováno v:
Phys. Rev. Lett. 122, 040606 (2019)
We consider spinless fermions on a finite one-dimensional lattice, interacting via nearest-neighbor repulsion and subject to a strong electric field. In the non-interacting case, due to Wannier-Stark localization, the single-particle wave functions a
Externí odkaz:
http://arxiv.org/abs/1808.01250
Publikováno v:
Phys. Rev. B 98, 060404 (2018)
We study the Kitaev-Heisenberg-$\Gamma$-$\Gamma'$ model that describes the magnetism in strong spin-orbit coupled honeycomb lattice Mott insulators. In strong $[111]$ magnetic fields that bring the system into the fully polarized paramagnetic phase,
Externí odkaz:
http://arxiv.org/abs/1802.04283
Autor:
Abanin, D.A., Bardarson, J.H., De Tomasi, G., Gopalakrishnan, S., Khemani, V., Parameswaran, S.A., Pollmann, F., Potter, A.C., Serbyn, M., Vasseur, R.
Publikováno v:
In Annals of Physics April 2021 427
Publikováno v:
J. Phys.: Condens. Matter 25 (2013) 406002
We study the phase diagram of the anisotropic spin-1 Heisenberg chain with single ion anisotropy (D) using a ground-state fidelity approach. The ground-state fidelity and its corresponding susceptibility are calculated within the quantum renormalizat
Externí odkaz:
http://arxiv.org/abs/1309.0402
Publikováno v:
Phys. Rev. Lett. 103, 247001 (2009)
Excitations which carry "fractional" quantum numbers are known to exist in one dimension in polyacetylene, and in two dimensions, in the fractional quantum Hall effect. Fractional excitations have also been invoked to explain the breakdown of the con
Externí odkaz:
http://arxiv.org/abs/0901.1057
Autor:
Fulde, P., Pollmann, F.
Publikováno v:
AnnalenPhys.17:441-449,1997
It is shown that strongly correlated electrons on frustrated lattices like pyrochlore, checkerboard or kagome lattice can lead to the appearance of closed and open strings. They are resulting from nonlocal subsidiary conditions which propagating stro
Externí odkaz:
http://arxiv.org/abs/0711.2129
Publikováno v:
Phys. Rev. Lett. 100, 136404 (2008)
We study strongly correlated electrons on a kagome lattice at 1/6 and 1/3 filling. They are described by an extended Hubbard Hamiltonian. We are concerned with the limit |t|<
Externí odkaz:
http://arxiv.org/abs/0705.3941