Zobrazeno 1 - 10
of 48
pro vyhledávání: '"W. P. Schleich"'
Publikováno v:
New Journal of Physics, Vol 21, Iss 7, p 073031 (2019)
In this article we present a new representation-free formalism, which can significantly simplify the analysis of interferometers comprised of atoms moving in time-dependent linear potentials. We present a methodology for the construction of two pairs
Externí odkaz:
https://doaj.org/article/9f6e21f5f7c7420fbd51196ea2f1aac2
We study the lines of constant phase corresponding to the ratio formed by the building blocks of the Titchmarsh counterexample, that is by two Dirichlet L-functions whose characters are the complex conjugate of each other. This ratio on the critical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bd19d891fc6bfa5c7a2196d304bffee
http://hdl.handle.net/10084/149198
http://hdl.handle.net/10084/149198
Publikováno v:
New Journal of Physics, Vol 20, Iss 2, p 023046 (2018)
We show that the expectation value of the operator $\hat{{ \mathcal O }}\equiv \exp (-c{\hat{x}}^{2})+\exp (-c{\hat{p}}^{2})$ defined by the position and momentum operators $\hat{x}$ and $\hat{p}$ with a positive parameter c can serve as a tool to id
Externí odkaz:
https://doaj.org/article/f83a04c1944c4ad8a8ce48e1ac656d29
Publikováno v:
New Journal of Physics, Vol 20, Iss 3, p 039601 (2018)
Externí odkaz:
https://doaj.org/article/972dc06479954490a051c7bda393e877
Autor:
C Feiler, W P Schleich
Publikováno v:
New Journal of Physics, Vol 17, Iss 6, p 063040 (2015)
We show that all Dirichlet series, linear combinations of them and their analytical continuations represent probability amplitudes for measurements on time-dependent quantum systems. In particular, we connect an arbitrary Dirichlet series to the time
Externí odkaz:
https://doaj.org/article/1760a9f24c1b4645a6a53b6a563cb77e
Publikováno v:
New Journal of Physics, Vol 16, Iss 10, p 103023 (2014)
A great many phenomena in physics can be traced back to the zeros of a function or a functional. Eigenvalue or variational problems prevalent in classical as well as quantum mechanics are examples illustrating this statement. Continuous descent metho
Externí odkaz:
https://doaj.org/article/90429b1344714161bf6a98dcea3becbe
Autor:
C Feiler, W P Schleich
Publikováno v:
New Journal of Physics, Vol 15, Iss 6, p 063009 (2013)
We propose measurements on a quantum system to realize the Riemann zeta function ζ . A single system, that is classical interference, suffices to create the Dirichlet representation of ζ . In contrast, we need measurements performed on two entangle
Externí odkaz:
https://doaj.org/article/a7f015017f35498dac640e1003ee904d
Publikováno v:
New Journal of Physics, Vol 15, Iss 5, p 053020 (2013)
We propose a tunable macroscopic quantum system based on two fractional vortices. Our analysis shows that two coupled fractional vortices pinned at two artificially created κ discontinuities of the Josephson phase in a long Josephson junction can re
Externí odkaz:
https://doaj.org/article/2693084f9f31438ab47e3063bc268f23
Publikováno v:
New Journal of Physics, Vol 15, Iss 1, p 013052 (2013)
Quantum carpets—the spatio-temporal de Broglie density profiles—woven by an atom or an electron in the near-field region of a diffraction grating bring to light, in real time, the decoherence of each individual component of the interference term
Externí odkaz:
https://doaj.org/article/72114729abec4c09af8f64eacad8347a
Publikováno v:
New Journal of Physics, Vol 15, Iss 1, p 013063 (2013)
The standard model of modern cosmology, which is based on the Friedmann–Lemaître–Robertson–Walker metric, allows the definition of an absolute time. However, there exist (cosmological) models consistent with the theory of general relativity fo
Externí odkaz:
https://doaj.org/article/60dfbb545d0a4b83b4e1605c8b599ad3