Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Kiryl Pakrouski"'
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043208 (2023)
In some quantum many-body systems, the Hilbert space breaks up into a large ergodic sector and a much smaller scar subspace. It has been suggested [K. Pakrouski et al., Phys. Rev. Lett. 125, 230602 (2020)0031-900710.1103/PhysRevLett.125.230602] that
Externí odkaz:
https://doaj.org/article/180c1abb5a7c49048910b5c75398c843
Autor:
Patrice Kolb, Kiryl Pakrouski
Publikováno v:
PRX Quantum, Vol 4, Iss 4, p 040348 (2023)
We study the stability of the many-body scars in spin-1/2 fermionic systems under the most typical perturbations in relevant materials. We find that some families of scars are completely insensitive to certain perturbations. In some other cases, they
Externí odkaz:
https://doaj.org/article/be3997aa348b42a6aa4e2dd5de6a1556
Autor:
Kiryl Pakrouski
Publikováno v:
Quantum, Vol 4, p 315 (2020)
We formulate an optimization problem of Hamiltonian design based on the variational principle. Given a variational ansatz for a Hamiltonian we construct a loss function to be minimised as a weighted sum of relevant Hamiltonian properties specifying t
Externí odkaz:
https://doaj.org/article/d69944e789204d4a88c5d8a8253d1a50
Autor:
Kiryl Pakrouski, Michael R. Peterson, Thierry Jolicoeur, Vito W. Scarola, Chetan Nayak, Matthias Troyer
Publikováno v:
Physical Review X, Vol 5, Iss 2, p 029901 (2015)
Externí odkaz:
https://doaj.org/article/75b75ee05f084d1fbefc37fc3b070444
Autor:
Kiryl Pakrouski, Michael R. Peterson, Thierry Jolicoeur, Vito W. Scarola, Chetan Nayak, Matthias Troyer
Publikováno v:
Physical Review X, Vol 5, Iss 2, p 021004 (2015)
Interesting non-Abelian states, e.g., the Moore-Read Pfaffian and the anti-Pfaffian, offer candidate descriptions of the ν=5/2 fractional quantum Hall state. But, the significant controversy surrounding the nature of the ν=5/2 state has been hamper
Externí odkaz:
https://doaj.org/article/361e318da50141e89073b43f1957c40e
Autor:
Kiryl Pakrouski
Publikováno v:
Physical Review B. 104
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2153ed5698b5ef459783e58e27acbe1b
https://doi.org/10.1103/physrevb.104.245306
https://doi.org/10.1103/physrevb.104.245306
Publikováno v:
Physical Review B. 104
After decades since its discovery, a complete understanding of the topological phase of matter at $\frac{5}{2}$ filling appears to be lacking. Previous numerical studies have narrowed the candidates to the Moore-Read Pfaffian or the anti-Pfaffian. Re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51c658c72aacede5ec6e03ba8c86a114
https://doi.org/10.1103/physrevb.104.l081407
https://doi.org/10.1103/physrevb.104.l081407
We present a class of Hamiltonians $H$ for which a sector of the Hilbert space invariant under a Lie group $G$, which is not a symmetry of $H$, possesses the essential properties of many-body scar states. These include the absence of thermalization a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f54e23d05ca5e775efb4be89715b83b
http://arxiv.org/abs/2007.00845
http://arxiv.org/abs/2007.00845
Publikováno v:
Physical Review
We discuss two types of quantum mechanical models that couple large numbers of Majorana fermions and have orthogonal symmetry groups. In models of vector type, only one of the symmetry groups has a large rank. The large $N$ limit is taken keeping $gN
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::080ce2f9d33ad3f00ca74467ed2b343f
Publikováno v:
Physical Review Letters. 122
We study the quantum mechanics of three-index Majorana fermions ψ^{abc} governed by a quartic Hamiltonian with O(N)^{3} symmetry. Similarly to the Sachdev-Ye-Kitaev model, this tensor model has a solvable large-N limit dominated by the melonic diagr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::512438e7acd1e04eacc16d1fca2430d7
https://doi.org/10.1103/physrevlett.122.011601
https://doi.org/10.1103/physrevlett.122.011601