Zobrazeno 1 - 10
of 220
pro vyhledávání: '"Urbanowski, K."'
Autor:
Urbanowski, K.
We try to find conditions, the fulfillment of which allows a universe born in a metastable false vacuum state to survive and not to collapse. The conditions found are in the form of inequalities linking the depending on time $t$ instantaneous decay r
Externí odkaz:
http://arxiv.org/abs/2207.10965
Autor:
Urbanowski, K.
The Heisenberg and Mandelstam-Tamm time-energy uncertainty relations are analyzed. The conlusion resulting from this analysis is that within the Quantum Mechanics of Schr\"{o}dinger and von Neumann, the status of these relations can not be considered
Externí odkaz:
http://arxiv.org/abs/1908.05273
Autor:
Urbanowski, K.
We analyze general uncertainty relations and we show that there can exist such pairs of non--commuting observables $A$ and $B$ and such vectors that the lower bound for the product of standard deviations $\Delta A$ and $\Delta B$ calculated for these
Externí odkaz:
http://arxiv.org/abs/1810.11462
Autor:
Raczynska, K., Urbanowski, K.
We consider a model of a unstable state defined by the truncated Breit-Wigner energy density distribution function. An analytical form of the survival amplitude $a(t)$ of the state considered is found. Our attention is focused on the late time proper
Externí odkaz:
http://arxiv.org/abs/1802.01441
Autor:
Urbanowski, K.
Publikováno v:
Acta Polonica B, vol. 48, 1847 (2017)
We analyze properties of unstable systems at rest and in motion.
Comment: 8 pages, 4 Figures, Talk presented at "2-nd Jagiellonian Symposium on Fundamental and Applied Subatomic Physics", June 4 --- 9, 2017, Krak\'ow, Poland
Comment: 8 pages, 4 Figures, Talk presented at "2-nd Jagiellonian Symposium on Fundamental and Applied Subatomic Physics", June 4 --- 9, 2017, Krak\'ow, Poland
Externí odkaz:
http://arxiv.org/abs/1711.06096
Autor:
Urbanowski, K.
Publikováno v:
Theor. Math. Phys., 190, 458, (2017)
We analyze properties of unstable vacuum states from the point of view of the quantum theory. In the literature one can find some suggestions that some of false (unstable) vacuum states may survive up to times when their survival probability has a no
Externí odkaz:
http://arxiv.org/abs/1609.03382
Autor:
Urbanowski, K.
Publikováno v:
Eur. Phys. J. D (2017) 71: 118
Results of theoretical studies of the quantum unstable systems caused that there are rather widespread belief that a universal feature od the quantum decay process is the presence of three time regimes of the decay process: the early time (initial) l
Externí odkaz:
http://arxiv.org/abs/1606.07301
Autor:
Urbanowski, K.
Publikováno v:
Advances in High Energy Physics, vol. 2015, Article ID 461987, 6 pages, 2015
We study properties of moving relativistic quantum unstable systems. We show that in contrast to the properties of classical particles and quantum stable objects the velocity of moving freely relativistic quantum unstable systems can not be constant
Externí odkaz:
http://arxiv.org/abs/1509.06710
Autor:
Urbanowski, K.
Estimates of the Higgs and top quark masses, $m_{H} \simeq 125.10 \pm 0.14$ [GeV] and $m_{t} \simeq 172.76 \pm 0.30$ [GeV] based on the experimental results place the Standard Model in the region of the metastable vacuum. A consequence of the metasta
Externí odkaz:
http://arxiv.org/abs/1509.03830
Autor:
Urbanowski, K.
Results presented in a recent paper "Which is the Quantum Decay Law of Relativistic particles?", arXiv: 1412.3346v2 [quant--ph]], are analyzed. We show that approximations used therein to derive the main final formula for the survival probability of
Externí odkaz:
http://arxiv.org/abs/1504.00794