Zobrazeno 1 - 10
of 259
pro vyhledávání: '"Tkachuk, P. M."'
Autor:
Kuzmak, A. R., Tkachuk, V. M.
We propose a protocol for studying the purely imaginary Fisher zeros of the Ising model on a quantum computer. Our protocol is based on the direct relation between the partition function for purely imaginary temperature and the evolution operator of
Externí odkaz:
http://arxiv.org/abs/2311.14453
Autor:
Gnatenko, Kh. P., Tkachuk, V. M.
In the paper a review of results for recovering of the weak equivalence principle in a space with deformed commutation relations for operators of coordinates and momenta is presented. Different types of deformed algebras leading to a space quantizati
Externí odkaz:
http://arxiv.org/abs/2302.01262
Autor:
Kuzmak, A. R., Tkachuk, V. M.
Publikováno v:
EPL 144, 38001 (2023)
We consider simulation of the high spins on a quantum computer. The protocols which allow one to measure the mean value of spin and correlations between spins are proposed. As a result, we determine the time dependence of the mean values of spin-1 in
Externí odkaz:
http://arxiv.org/abs/2205.10800
Autor:
Gnatenko, Kh. P., Tkachuk, V. M.
Spin-1 tunneling and splitting of energy levels as a result of tunneling are observed explicitly on IBM's quantum computer, ibmq-bogota. The spin-1 is realized with two spins-1/2. We detect oscillations of spin-1 between the states $|1\rangle$, $|-1\
Externí odkaz:
http://arxiv.org/abs/2201.08872
We propose the definition of the geometric measure of entanglement for continuous variable states. On the basis of this definition we examine entanglement of the graph states obtained as a result of action of a unitary operator on the ground state of
Externí odkaz:
http://arxiv.org/abs/2112.06059
Autor:
Samar, M. I., Tkachuk, V. M.
We consider the Dirac $\delta$-function potential problem in general case of deformed Heisenberg algebra leading to the minimal length. Exact bound and scattering solutions of the problem in quasiposition representation are presented. We obtain that
Externí odkaz:
http://arxiv.org/abs/2110.12494
Publikováno v:
Eur. Phys. J. Plus 137, No. 4, 522 [10 p.] (2022)
We propose a method for detection of energy levels of arbitrary spin system on a quantum computer based on studies of evolution of only one probe spin. On the basis of the proposed method energy levels of spin systems are found on IBM's quantum compu
Externí odkaz:
http://arxiv.org/abs/2109.11400
Publikováno v:
Phys. Lett. A 452, 128434 (2022)
Geometric properties of evolutionary graph states of spin systems generated by the operator of evolution with Ising Hamiltonian are examined, using their relationship with fluctuations of energy. We find that the geometric characteristics of the grap
Externí odkaz:
http://arxiv.org/abs/2108.12909
Autor:
Samar, M. I., Tkachuk, V. M.
In general case of deformed Heisenberg algebra leading to the minimal length, we present a definition of the $\delta'(x)$ potential as a linear kernel of potential energy operator in momentum representation. We find exactly the energy level and corre
Externí odkaz:
http://arxiv.org/abs/2108.11049
Publikováno v:
Phys. Lett. A 424, 127843 (2022) 7 p
We show that the time dependence of mean value of a physical quantity is related with the transition energies of a quantum system. In the case when the operator of a physical quantity anticommutes with the Hamiltonian of a system, studies of the evol
Externí odkaz:
http://arxiv.org/abs/2108.08873