Results 61 to 70 of about 8,896,647 (278)
Quantum Theory from Quantum Gravity
We provide a mechanism by which, from a background independent model with no quantum mechanics, quantum theory arises in the same limit in which spatial properties appear.
C. Rovelli+5 more
core +3 more sources
Quantum Theory of the Diplon [PDF]
The work of Heisenberg Majorana and Wigner seems to show that the behaviour of protons and neutrons and their interaction in the nucleus may be described by the ordinary methods of quantum mechanics. It is of particular interest to study the simplest nuclear system, i.
Hans A. Bethe, R. Peterls
openaire +3 more sources
Discrete quantum theories [PDF]
We explore finite-field frameworks for quantum theory and quantum computation. The simplest theory, defined over unrestricted finite fields, is unnaturally strong. A second framework employs only finite fields with no solution to x^2+1=0, and thus permits an elegant complex representation of the extended field by adjoining i=\sqrt{-1}. Quantum theories
Gerardo Ortiz+3 more
openaire +3 more sources
Hydrodynamic effective field theories with discrete rotational symmetry
We develop a hydrodynamic effective field theory on the Schwinger-Keldysh contour for fluids with charge, energy, and momentum conservation, but only discrete rotational symmetry.
Xiaoyang Huang, Andrew Lucas
doaj +1 more source
Quantum Systems based upon Galois Fields: from Sub-quantum to Super-quantum Correlations
In this talk we describe our recent work on discrete quantum theory based on Galois fields. In particular, we discuss how discrete quantum theory sheds new light on the foundations of quantum theory and we review an explicit model of super-quantum ...
Chang, Lay Nam+3 more
core +1 more source
Quantum scars in quantum field theory
We develop the theory of quantum scars for quantum fields. By generalizing the formalisms of Heller and Bogomolny from few-body quantum mechanics to quantum fields, we find that unstable periodic classical solutions of the field equations imprint themselves in a precise manner on bands of energy eigenfunctions.
Jordan Cotler, Annie Y. Wei
openaire +2 more sources
Thermodynamics of Reduced State of the Field
Recent years have seen the flourishing of research devoted to quantum effects on mesoscopic and macroscopic scales. In this context, in Entropy 2019, 21, 705, a formalism aiming at describing macroscopic quantum fields, dubbed Reduced State of the Field (
Stefano Cusumano, Łukasz Rudnicki
doaj +1 more source
Probabilistic and Statistical Aspects of Quantum Theory
Foreword to 2nd English edition.- Foreword to 2nd Russian edition.- Preface.- Chapters: I. Statistical Models.- II. Mathematics of Quantum Theory.- III. Symmetry Groups in Quantum Mechanics.- IV. Covariant Measurements and Optimality.- V. Gaussian States.
A. Holevo, L. Ballentine
semanticscholar +1 more source
Causal Quantum Theory and the Collapse Locality Loophole
Causal quantum theory is an umbrella term for ordinary quantum theory modified by two hypotheses: state vector reduction is a well-defined process, and strict local causality applies. The first of these holds in some versions of Copenhagen quantum theory
A. Kent+9 more
core +1 more source
The quantum theory of the electron
The new quantum mechanics, when applied to the problem of the structure of the atom with point-charge electrons, does not give results in agreement with experiment.
P. Dirac
semanticscholar +1 more source