Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Zimborás Z"'
Publikováno v:
J. Phys. Complex. 1 (2020) 03LT01
The numerical emulation of quantum systems often requires an exponential number of degrees of freedom which translates to a computational bottleneck. Methods of machine learning have been used in adjacent fields for effective feature extraction and d
Externí odkaz:
http://arxiv.org/abs/2005.02104
Autor:
Dhital, N., Homola, P., Alvarez-Castillo, D., Gora, D., Wilczyński, H., Cheminant, K. Almeida, Poncyljusz, B., Mędrala, J., Opiła, G., Bhatta, G., Bretz, T., Ćwikła, A., Duffy, A. R., Gupta, A. C., Hnatyk, B., Jagoda, P., Kasztelan, M., Kopański, K., Kovacs, P., Krupinski, M., Nazari, V., Niedźwiecki, M., Ostrogórski, D., Rzecki, K., Smelcerz, K., Smolek, K., Stasielak, J., Sushchov, O., Wibig, T., Wozniak, K., Zamora-Saa, J., Zimborás, Z., Tursunov, Arman
Publikováno v:
JCAP03(2022)038
Propagation of ultra-high energy photons in the solar magnetosphere gives rise to cascades comprising thousands of photons. We study the cascade development using Monte Carlo simulations and find that the photons in the cascades are spatially extende
Externí odkaz:
http://arxiv.org/abs/1811.10334
Autor:
Ván, P., Barnaföldi, G. G., Bulik, T., Biró, T., Czellár, S., Cieślar, M., Czanik, Cs., Dávid, E., Debreceni, E., Denys, M., Dobróka, M., Fenyvesi, E., Gondek-Rosińska, D., Gráczer, Z., Hamar, G., Huba, G., Kacskovics, B., Kis, Á., Kovács, I., Kovács, R., Lemperger, I., Lévai, P., Lökös, S., Mlynarczyk, J., Molnár, J., Singh, N., Novák, A., Oláh, L., Starecki, T., Suchenek, M., Surányi, G., Szalai, S., Tringali, M. C., Varga, D., Vasúth, M., Vásárhelyi, B., Wesztergom, V., Wéber, Z., Zimborás, Z., Somlai, L.
Publikováno v:
The European Physical Journal, Special Topics 228, 1693-1743 (2019)
Summary of the long term data taking, related to one of the proposed next generation ground-based gravitational detector's location is presented here. Results of seismic and infrasound noise, electromagnetic attenuation and cosmic muon radiation meas
Externí odkaz:
http://arxiv.org/abs/1811.05198
Publikováno v:
J. Math. Phys. 58, 122204 (2017)
Quantum versions of de Finetti's theorem are powerful tools, yielding conceptually important insights into the security of key distribution protocols or tomography schemes and allowing to bound the error made by mean-field approaches. Such theorems l
Externí odkaz:
http://arxiv.org/abs/1708.01266
Publikováno v:
Phys. Rev. B 97, 165123 (2018)
The entanglement negativity is a versatile measure of entanglement that has numerous applications in quantum information and in condensed matter theory. It can not only efficiently be computed in the Hilbert space dimension, but for non-interacting b
Externí odkaz:
http://arxiv.org/abs/1611.08007
Autor:
Farkas, S., Zimboras, Z.
Publikováno v:
J. Math. Phys. 48, 102110 (2007)
We study the von Neumann entropy asymptotics of pure translation-invariant quasi-free states of d-dimensional fermionic systems. It is shown that the entropic area law is violated by all these states: apart from the trivial cases, the entropy of a cu
Externí odkaz:
http://arxiv.org/abs/0706.1805
Publikováno v:
Europhys. Lett. 79, 37001 (2007)
We study the entanglement entropy of blocks of contiguous spins in non-periodic (quasi-periodic or more generally aperiodic) critical Heisenberg, XX and quantum Ising spin chains, e.g. in Fibonacci chains. For marginal and relevant aperiodic modulati
Externí odkaz:
http://arxiv.org/abs/cond-mat/0701527
Autor:
Farkas, S., Zimboras, Z.
Publikováno v:
J. Math. Phys. 46, 123301 (2005)
The zero-entropy-density conjecture states that the entropy density, defined as the limit of S(N)/N at infinity, vanishes for all translation-invariant pure states on the spin chain. Or equivalently, S(N), the von Neumann entropy of such a state rest
Externí odkaz:
http://arxiv.org/abs/math-ph/0507022
Autor:
Eisler, V., Zimboras, Z.
Publikováno v:
PRA 71, 042318 (2005)
We consider the ground state of the XX chain that is constrained to carry a current of energy. The von Neumann entropy of a block of $L$ neighboring spins, describing entanglement of the block with the rest of the chain, is computed. Recent calculati
Externí odkaz:
http://arxiv.org/abs/quant-ph/0412118
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