On the Way of Introducing Some Basic NMR Aspects: From the Classical and Naive Quantum Models to the Density-Operator Approach

1996 ◽  
Vol 73 (4) ◽  
pp. 310 ◽  
Author(s):  
Juan Carlos Paniagua ◽  
Albert Moyano
Keyword(s):  
Density Operator ◽  
Operator Approach ◽  
Quantum Models ◽  
The Way

Laser theory with natural inclusion of radiation loss: Density-operator approach

1988 ◽  
Vol 66 (9) ◽  
pp. 764-768 ◽  
Author(s):  
A. Liberato ◽  
B. Baseia
Keyword(s):  
Recent Result ◽  
Density Operator ◽  
Conventional Treatment ◽  
Optical Cavity ◽  
Equation Of Motion ◽  
Operator Approach ◽  
Transmitted Beam ◽  
Laser Theory ◽  
Natural Inclusion ◽  
Natural Way

A recent result of a previous paper describing the field loss in an optical cavity in a natural way is applied to laser theory. The field loss, due to the transmitted beam light, and the field gain, now attributed to the presence of active atoms but previously attributed to two noninteracting mechanisms, are correctly added to provide the equation of motion for the density operator of the radiation field. The replacement of individual operators, which appear in the conventional treatment, with collective operators is a conceptual difference that emerges from the present approach.

scholarly journals Nonequilibrium density operator approach to domain wall resistivity

2011 ◽  
Vol 286 ◽  
pp. 012017 ◽  
Author(s):  
Jun-ichiro Kishine ◽  
A S Ovchinnikov ◽  
I V Proskurin
Keyword(s):  
Domain Wall ◽  
Density Operator ◽  
Operator Approach ◽  
Wall Resistivity

Self-sacrifice for in-group's history: A diachronic perspective

2018 ◽  
Vol 41 ◽  
Author(s):  
Maria Babińska ◽  
Michal Bilewicz
Keyword(s):  
Clinical Psychology ◽  
Historical Events ◽  
Emotional Events ◽  
Reciprocal Process ◽  
The Way

AbstractThe problem of extended fusion and identification can be approached from a diachronic perspective. Based on our own research, as well as findings from the fields of social, political, and clinical psychology, we argue that the way contemporary emotional events shape local fusion is similar to the way in which historical experiences shape extended fusion. We propose a reciprocal process in which historical events shape contemporary identities, whereas contemporary identities shape interpretations of past traumas.

What is the purpose of cognition?

2020 ◽  
Vol 43 ◽  
Author(s):  
Aba Szollosi ◽  
Ben R. Newell
Keyword(s):  
Infinite Number ◽  
Human Cognition ◽  
The Way

Abstract The purpose of human cognition depends on the problem people try to solve. Defining the purpose is difficult, because people seem capable of representing problems in an infinite number of ways. The way in which the function of cognition develops needs to be central to our theories.

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