scholarly journals New Directions in Multiphoton Dissociation

1992 ◽  
Vol 12 (1-2) ◽  
pp. 25-31 ◽  
Author(s):  
P. F. González-Díaz ◽  
M. Santos ◽  
C. L. Sigüenza ◽  
J. A. Torresano
Keyword(s):  
Quantum Mechanics ◽  
Single Pulse ◽  
Double Exposure ◽  
Dissociation Process ◽  
New Directions ◽  
Multiphoton Dissociation ◽  
New Interpretation ◽  
Instabilities And Chaos

Unimolecular multiphoton dissociation offers us a rather complete scheme where the transition from quantum mechanics to the classical regime can be experimentally followed. In the light of this idea, a new interpretation of the unimolecular multiphoton dissociation process is presented. The role that the intramolecular generation of instabilities and chaos may play in that process is discussed, both in single and double exposure experiments. Delayed double irradiation is also discussed and a criterion to define an effective single pulse notion in that kind of experiment is given.

scholarly journals Relating causal and probabilistic approaches to contextuality

2019 ◽  
Vol 377 (2157) ◽  
pp. 20190133
Author(s):  
Matt Jones
Keyword(s):  
Quantum Mechanics ◽  
Causal Model ◽  
Probability Distributions ◽  
Hidden Variables ◽  
Measurement Model ◽  
Direct Influence ◽  
Theme Issue ◽  
Full System ◽  
General Systems ◽  
New Interpretation

A primary goal in recent research on contextuality has been to extend this concept to cases of inconsistent connectedness, where observables have different distributions in different contexts. This article proposes a solution within the framework of probabi- listic causal models, which extend hidden-variables theories, and then demonstrates an equivalence to the contextuality-by-default (CbD) framework. CbD distinguishes contextuality from direct influences of context on observables, defining the latter purely in terms of probability distributions. Here, we take a causal view of direct influences, defining direct influence within any causal model as the probability of all latent states of the system in which a change of context changes the outcome of a measurement. Model-based contextuality (M-contextuality) is then defined as the necessity of stronger direct influences to model a full system than when considered individually. For consistently connected systems, M-contextuality agrees with standard contextuality. For general systems, it is proved that M-contextuality is equivalent to the property that any model of a system must contain ‘hidden influences’, meaning direct influences that go in opposite directions for different latent states, or equivalently signalling between observers that carries no information. This criterion can be taken as formalizing the ‘no-conspiracy’ principle that has been proposed in connection with CbD. M-contextuality is then proved to be equivalent to CbD-contextuality, thus providing a new interpretation of CbD-contextuality as the non-existence of a model for a system without hidden direct influences. This article is part of the theme issue ‘Contextuality and probability in quantum mechanics and beyond’.

scholarly journals Classical quantum mechanics – particle is the pulse of matter waves

2020 ◽  
Vol 5 (4) ◽  
Author(s):  
Dimosthenis Michopoulos
Keyword(s):  
Quantum Mechanics ◽  
Experimental Verification ◽  
Experimental Results ◽  
Classical Physics ◽  
Matter Waves ◽  
Theoretical Predictions ◽  
Classical Quantum ◽  
New Interpretation

Since the very first development of Quantum Mechanics there are many scientists who, despite the fact that everything seems to work perfectly and the experimental results verify the theoretical predictions, do not understand what is really going on. That is why there are many different interpretations of this subject nowadays. This paper provides a new interpretation, aiming to illustrate the fact that Quantum Mechanics is actually an extension of Classical Physics, and in contrast to other interpretations we illustrate a possible experimental verification of theoretical wording.

scholarly journals Experimental Demonstrations of Coherence de Broglie Waves Using Sub-Poisson Distributed Coherent Photon Pairs

2021 ◽  
Author(s):  
S. Kim ◽  
Byoung S. Ham
Keyword(s):  
Quantum Mechanics ◽  
Direct Proof ◽  
Quantum Correlations ◽  
Analytic Solutions ◽  
Quantum Communications ◽  
Photon Pairs ◽  
De Broglie Waves ◽  
Wave Nature ◽  
New Interpretation ◽  
Particle Nature

Abstract Recently, a new interpretation of quantum mechanics has been developed for the wave nature of a photon, where determinacy in quantum correlations becomes an inherent property without the violation of quantum mechanics. Here, we experimentally demonstrate a direct proof of the wave natures of quantum correlation for the so-called coherence de Broglie waves (CBWs) using sub-Poisson distributed coherent photon pairs obtained from an attenuated laser. The observed experimental data coincides with the analytic solutions and the numerical calculations. Thus, the CBWs pave a road toward deterministic and macroscopic quantum technologies for such as quantum metrology, quantum sensing, and even quantum communications, that are otherwise heavily limited due to the microscopic non-determinacy of the particle nature-based quantum mechanics.

Science and exile: David Bohm, the cold war, and a new interpretation of quantum mechanics

2005 ◽  
Vol 36 (1) ◽  
pp. 1-34 ◽  
Author(s):  
OLIVAL FREIRE
Keyword(s):  
Quantum Mechanics ◽  
Cold War ◽  
Cultural Context ◽  
Foundations Of Quantum Mechanics ◽  
Interpretation Of Quantum Mechanics ◽  
Causal Interpretation ◽  
David Bohm ◽  
New Interpretation ◽  
The Cold War ◽  
American Physicist

ABSTRACT In the early 1950s the American physicist David Bohm (1917-1992) produced a new interpretation of quantum mechanics and had to flee from McCarthyism. Rejected at Princeton, he moved to Sãão Paulo. This article focuses on the reception of his early papers on the causal interpretation, his Brazilian exile, and the culture of physics surrounding the foundations of quantum mechanics. It weighs the strength of the Copenhagen interpretation, discusses the presentation of the foundations of quantum mechanics in the training of physicists, describes the results Bohm and his collaborators achieved. It also compares the reception of Bohm's ideas with that of Hugh Everett's interpretation. The cultural context of physics had a more significant influence on the reception of Bohm's ideas than the McCarthyist climate.

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