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Kiryl Pakrouski on Muck Rack

Kiryl Pakrouski

As seen in: Physical Review B
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Articles

Stability of the Many-Body Scars in Fermionic Spin-1/2 Models

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By Patrice Kolb, Kiryl Pakrouski
| Physical Review B
Popular Summary When an interacting quantum system is initialized to a state that is not an eigenstate of its Hamiltonian, it typically disappears quickly, with the quantum information stored in it lost through thermalization. This expectation follows from the ergodicity assumption, which is closely related to the eigenstate thermalization hypothesis, the cornerstone conjecture connecting the microscopic behavior of quantum systems to the macroscopic physics.
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Majorana scars as group singlets

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By Fedor K. Popov, Igor R. Klebanov, Kiryl Pakrouski, Zimo Sun
| Physical Review B
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)] that the two sectors may be distinguished by their transformation properties under a large group whose rank grows with the system size (it is not a symmetry of the Hamiltonian). The quantum many-body scars are invariant under this group, while all other states are not.
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Stability of the particle-hole Pfaffian state and the $\frac{5}{2}$-fractional quantum Hall effect

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By Edward H. Rezayi, Kiryl Pakrouski
| Physical Review B
Abstract We present a method for the exact construction of the fully particle-hole symmetric Pfaffian (PH-Pfaffian) ground state and its charged excitations on a sphere. We adopt the Moore-Read state, but with a nonholomorphic pairing component as in previous studies, and project it to the lowest Landau level.
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