Results 31 to 40 of about 985,665 (284)

Kelvin-Helmholtz instability is the result of parity-time symmetry breaking

open access: yes, 2018
Parity-Time (PT)-symmetry is being actively investigated as a fundamental property of observables in quantum physics. We show that the governing equations of the classical two-fluid interaction and the incompressible fluid system are PT-symmetric, and ...
Glasser, Alexander S.   +3 more
core   +1 more source

Electromagnetism in terms of quantum measurements [PDF]

open access: yes, 2015
We consider the question whether electromagnetism can be derived from quantum physics of measurements. It turns out that this is possible, both for quantum and classical electromagnetism, if we use more recent innovations such as smearing of observables ...
Accardi L.   +12 more
core   +3 more sources

Causality in classical physics [PDF]

open access: yesResonance, 2014
Classical physics encompasses the study of physical phenomena which ranges from local (a point) to nonlocal (a region) in space and/or time. We discuss the concept of spatial and temporal nonlocality. However, one of the likely implications pertaining to nonlocality is non-causality. We study causality in the context of phenomena involving nonlocality.
openaire   +2 more sources

A condition for any realistic theory of quantum systems

open access: yes, 2007
In quantum physics, the density operator completely describes the state. Instead, in classical physics the mean value of every physical quantity is evaluated by means of a probability distribution. We study the possibility to describe pure quantum states
A. Montina   +8 more
core   +1 more source

Quantum Interpretations [PDF]

open access: yes, 2006
Difficulties and discomfort with the interpretation of quantum mechanics are due to differences in language between it and classical physics. Analogies to The Special Theory of Relativity, which also required changes in the basic worldview and language ...
Rau, A. R. P.
core   +3 more sources

Classical-physics applications for Finsler b space

open access: yesPhysics Letters B, 2015
The classical propagation of certain Lorentz-violating fermions is known to be governed by geodesics of a four-dimensional pseudo-Finsler b space parametrized by a prescribed background covector field.
Joshua Foster, Ralf Lehnert
doaj   +1 more source

Unification of Relativistic and Quantum Mechanics from Elementary Cycles Theory

open access: yes, 2016
In Elementary Cycles theory elementary quantum particles are consistently described as the manifestation of ultra-fast relativistic spacetime cyclic dynamics, classical in the essence.
Dolce, Donatello
core   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Modelo clássico para resfriamento atômico: Uma forma pedagógica de entender o problema

open access: yesRevista Brasileira de Ensino de Física
Neste trabalho desenvolvemos um modelo clássico para descrever o processo de resfriamento atômico devido à interação de um átomo com uma configuração de feixes de luz laser.
N.D. Gomes   +2 more
doaj   +1 more source

Clinical Course and Impact of Breaks in Therapy for Children With Relapsed/Refractory Solid Tumors

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pediatric relapsed or refractory (R/R) solid tumors carry a dismal prognosis, and postrelapse patient experiences are not well described. We present postrelapse outcomes, including number of R/R events and subsequent therapy regimens.
Matthew T. McEvoy   +5 more
wiley   +1 more source

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