Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Dias, Eduardo O."'
Autor:
Dias, Eduardo O.
In conventional quantum mechanics (QM), time is treated as a parameter, $t$, and the evolution of the quantum state with respect to time is described by ${\hat {H}}|\psi(t)\rangle=i\hbar \frac{d}{dt}|\psi(t)\rangle$. In a recently proposed space-time
Externí odkaz:
http://arxiv.org/abs/2308.04376
Publikováno v:
Phys. Rev. A 109, 012221 (2024)
An alternative quantization rule, in which time becomes a self-adjoint operator and position is a parameter, was proposed by Dias and Parisio [Phys. Rev. A {\bf 95}, 032133 (2017)]. In this approach, the authors derive a space-time-symmetric (STS) ex
Externí odkaz:
http://arxiv.org/abs/2306.12000
Developing adhesives whose bond strength can be externally manipulated is a topic of considerable interest for practical and scientific purposes. In this work, we propose a method of controlling the adhesion force of a regular fluid, such as water an
Externí odkaz:
http://arxiv.org/abs/2209.04719
Treating the time of an event as a quantum variable, we derive a scheme in which superpositions in time are used to perform operations in an indefinite causal order. We use some aspects of a recently developed space-time-symmetric formalism of events
Externí odkaz:
http://arxiv.org/abs/2107.08076
Publikováno v:
Phys. Rev. A 105, L010202, 14 January 2022
By representing an event as the joint state of a detector-timer couple that interact with a system, we recover the familiar tensor product structure, used to describe spatially separated systems, in the context of timelike events. Furthermore, with t
Externí odkaz:
http://arxiv.org/abs/2104.09501
Autor:
Dias, Eduardo O.
Publikováno v:
Phys. Rev. A 103, 012219 (2021)
Although time is one of our most intuitive physical concepts, its understanding at the fundamental level is still an open question in physics. For instance, time in quantum mechanics and general relativity are two distinct and incompatible entities.
Externí odkaz:
http://arxiv.org/abs/2007.00513
Autor:
Ximenes, Ricardo, Dias, Eduardo O.
It is well known that nonrelativistic quantum mechanics presents a clear asymmetry between space and time. Much of this asymmetry is attributed to the lack of Lorentz invariance of the theory. Nonetheless, a recent work [Phys. Rev. A \textbf{95}, 032
Externí odkaz:
http://arxiv.org/abs/1712.03446
Publikováno v:
Phys. Rev. A 98, 032105 (2018)
The question of how long a particle takes to pass through a potential barrier is still a controversial topic in quantum mechanics. Arguably, the main theoretical problem in obtaining estimates for measurable times is the fact that previously defined
Externí odkaz:
http://arxiv.org/abs/1712.00397
Autor:
Dias, Eduardo O., Parisio, Fernando
Publikováno v:
Phys. Rev. A 95, 032133 (2017)
In quantum theory we refer to the probability of finding a particle between positions $x$ and $x+dx$ at the instant $t$, although we have no capacity of predicting exactly when the detection occurs. In this work, first we present an extended non-rela
Externí odkaz:
http://arxiv.org/abs/1605.03121
Publikováno v:
Phys. Rev. E 94, 013109 (2016)
A variational approach has been recently employed to determine the ideal time-dependent injection rate Q(t) that minimizes fingering formation when a fluid is injected in a Hele-Shaw cell filled with another fluid of much greater viscosity. However,
Externí odkaz:
http://arxiv.org/abs/1605.01077