True strong coupling treatment of the strongly coupled channel theory of the nuclear reactions

1963 ◽  
Vol 6 (1) ◽  
pp. 111-113 ◽  
Author(s):  
Taro Tamura
Keyword(s):  
Strong Coupling ◽  
Nuclear Reactions ◽  
Strongly Coupled ◽  
Coupled Channel ◽  
Channel Theory ◽  
Coupling Treatment

Off-shell resonances in coupled channel problems

1979 ◽  
Vol 57 (6) ◽  
pp. 801-808 ◽  
Author(s):  
G. Pantis
Keyword(s):  
Nuclear Reactions ◽  
Bound State ◽  
Direct Reaction ◽  
Background Term ◽  
Separable Potentials ◽  
State Behaviour ◽  
Square Well ◽  
T Matrix ◽  
Coupled Channel ◽  
Channel Theory

The coupled channel theory of nuclear reactions is extended off the energy shell so that the T-matrix can be constructed to include both the direct reaction contribution and the contribution from the off-shell background scattering. This has been shown to be important for (d,p) stripping reactions to unbound states. Three soluble two-channel models with square well, δ-function, and separable potentials, are presented and the resonance and bound state behaviour is discussed in some numerical detail. The importance of the off-shell background term is also studied.

scholarly journals Fundamental limitations of the mode temperature concept in strongly coupled systems

2020 ◽  
Vol 75 (8) ◽  
pp. 803-807
Author(s):  
Svend-Age Biehs ◽  
Achim Kittel ◽  
Philippe Ben-Abdallah
Keyword(s):  
Heat Transfer ◽  
Heat Exchange ◽  
Strong Coupling ◽  
Quantum Systems ◽  
Coupled Systems ◽  
Strong Coupling Limit ◽  
Strongly Coupled ◽  
Fundamental Limitations ◽  
Temperature Concept ◽  
Vacuum Gap

AbstractWe theoretically analyze heat exchange between two quantum systems in interaction with external thermostats. We show that in the strong coupling limit the widely used concept of mode temperatures loses its thermodynamic foundation and therefore cannot be employed to make a valid statement on cooling and heating in such systems; instead, the incorrectly applied concept may result in a severe misinterpretation of the underlying physics. We illustrate these general conclusions by discussing recent experimental results reported on the nanoscale heat transfer through quantum fluctuations between two nanomechanical membranes separated by a vacuum gap.

scholarly journals Phases of a strongly coupled four-fermion theory

2018 ◽  
Vol 175 ◽  
pp. 03004 ◽  
Author(s):  
David Schaich ◽  
Simon Catterall
Keyword(s):  
Strong Coupling ◽  
Weak Coupling ◽  
Strongly Coupled ◽  
Coupling Phase ◽  
Long Range Correlations ◽  
Mass Gap ◽  
Narrow Region ◽  
Lattice Field ◽  
Lattice Symmetry ◽  
Lattice Fermion

We present ongoing investigations of a four-dimensional lattice field theory with four massless reduced staggered fermions coupled through an SU(4)-invariant fourfermion interaction. As in previous studies of four-fermion and Higgs–Yukawa models with different lattice fermion discretizations, we observe a strong-coupling phase in which the system develops a mass gap without breaking any lattice symmetry. This symmetric strong-coupling phase is separated from the symmetric weak-coupling phase by a narrow region of four-fermi coupling in which the system exhibits long-range correlations.

A strongly coupled 3D ternary Fe2O3@Ni2P/Ni(PO3)2 hybrid for enhanced electrocatalytic oxygen evolution at ultra-high current densities

2019 ◽  
Vol 7 (3) ◽  
pp. 965-971 ◽  
Author(s):  
Xiaodi Cheng ◽  
Zhiyan Pan ◽  
Chaojun Lei ◽  
Yangjun Jin ◽  
Bin Yang ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Oxygen Evolution ◽  
Synergistic Effects ◽  
High Current ◽  
Strongly Coupled ◽  
Highly Active ◽  
Current Densities

A ternary Fe2O3@Ni2P/Ni(PO3)2 hybrid with strong coupling and synergistic effects was developed for highly active OER at ultra-high current densities.

scholarly journals QCD, with strings attached

2016 ◽  
Vol 25 (10) ◽  
pp. 1630006 ◽  
Author(s):  
Alberto Güijosa
Keyword(s):  
String Theory ◽  
Quantum Chromodynamics ◽  
Large Class ◽  
Strong Coupling ◽  
Field Theories ◽  
Strong Coupling Regime ◽  
Efficient Tool ◽  
Strongly Coupled ◽  
Coupled Field ◽  
Gauge Gravity

In the nearly 20 years that have elapsed since its discovery, the gauge-gravity correspondence has become established as an efficient tool to explore the physics of a large class of strongly-coupled field theories. A brief overview is given here of its formulation and a few of its applications, emphasizing attempts to emulate aspects of the strong-coupling regime of quantum chromodynamics (QCD). To the extent possible, the presentation is self-contained, and does not presuppose knowledge of string theory.

scholarly journals Study of Deuteron Stripping Reaction by Coupled Channel Theory. I

1969 ◽  
Vol 41 (2) ◽  
pp. 391-418 ◽  
Author(s):  
Takashi Ohmura ◽  
Bunryu Imanishi ◽  
Munetake Ichimura ◽  
Mitsuji Kawai
Keyword(s):  
Deuteron Stripping ◽  
Coupled Channel ◽  
Channel Theory
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