RenormalizedπNN coupling constant and theP-wave phase shifts in the cloudy bag model

1986 ◽  
Vol 34 (3) ◽  
pp. 991-1003 ◽  
Author(s):  
B. C. Pearce ◽  
I. R. Afnan
Keyword(s):  
Phase Shifts ◽  
Coupling Constant ◽  
Bag Model ◽  
Wave Phase

Coupling Constant andP-Wave Phase Shifts in Low-Energy Pion-Nucleon Scattering

1964 ◽  
Vol 133 (1B) ◽  
pp. B191-B195 ◽  
Author(s):  
Archibald W. Hendry ◽  
Berthold Stech
Keyword(s):  
Phase Shifts ◽  
Low Energy ◽  
Coupling Constant ◽  
Nucleon Scattering ◽  
Wave Phase ◽  
Pion Nucleon

KN s-wave phase shifts in the non-relativistic quark model

1995 ◽  
Vol 589 (4) ◽  
pp. 585-600 ◽  
Author(s):  
B. Silvestre-Brac ◽  
J. Leandri ◽  
J. Labarsouque
Keyword(s):  
Quark Model ◽  
Phase Shifts ◽  
Relativistic Quark Model ◽  
S Wave ◽  
Wave Phase

scholarly journals Pion Theory of Nuclear Forces and Low EnergyP-Wave Phase Shifts

1961 ◽  
Vol 25 (3) ◽  
pp. 427-435 ◽  
Author(s):  
Shoichiro Otsuki ◽  
Mituo Taketani ◽  
Ryozo Tamagaki ◽  
Wataro Watari
Keyword(s):  
Phase Shifts ◽  
Nuclear Forces ◽  
Wave Phase

scholarly journals de Broglie wave phase shifts induced by surfaces closer than 25 nm

2005 ◽  
Vol 19 ◽  
pp. 48-55 ◽  
Author(s):  
Alexander D Cronin ◽  
John D Perreault
Keyword(s):  
Phase Shifts ◽  
Wave Phase ◽  
De Broglie Wave

The nucleon–nucleon interaction. I. Scalar mesons

1976 ◽  
Vol 54 (3) ◽  
pp. 322-332
Author(s):  
A. Z. Capri ◽  
D. Menon ◽  
R. Teshima
Keyword(s):  
Bound States ◽  
Bound State ◽  
Nucleon Nucleon ◽  
Phase Shifts ◽  
Variational Calculation ◽  
Coupling Constant ◽  
Nucleon Interaction ◽  
Scalar Mesons ◽  
T Matrix ◽  
Nucleon Nucleon Interaction

The two-nucleon interaction, via the exchange of scalar mesons, is examined in a nonperturbative manner. 'Schrödinger' equations are derived, and nonlocal potentials arise naturally. Both scattering and bound states are examined. A half-off-shell T matrix is obtained, and corresponding phase shifts are evaluated. In the bound state, a variational calculation is employed to determine the coupling constant.

Positron–hydrogen scattering with quadratic variational methods

1982 ◽  
Vol 60 (4) ◽  
pp. 577-580 ◽  
Author(s):  
M. A. Abdel-Raouf
Keyword(s):  
Elastic Scattering ◽  
Variational Methods ◽  
Phase Shifts ◽  
S Wave ◽  
Variational Techniques ◽  
Wave Phase

New variational techniques in which the functional [Formula: see text] is minimized are used to calculate the S-wave phase shifts of e+–H elastic scattering. The convergence of these phases, as n increases, is precisely investigated.

scholarly journals How surface magnetism affects helioseismic waves

2009 ◽  
Vol 5 (H15) ◽  
pp. 349-350
Author(s):  
Paul S. Cally
Keyword(s):  
Travel Time ◽  
Active Regions ◽  
Phase Shifts ◽  
Magnetic Effect ◽  
Surface Magnetism ◽  
Field Characteristic ◽  
Magnetic Effects ◽  
Wave Phase ◽  
Time Distance ◽  
Effect Phase

AbstractIt has been known for two decades that sunspots both absorb and advance the phase of solar f and p-modes. More recently, Time-Distance and other local helioseismic techniques have been used to probe active regions by exploring phase shifts which are interpreted as travel-time perturbations. Although absorption is an intrinsically magnetic effect, phase shifts may be produced by both thermal and magnetic effects (and of course flows, though these can be factored out by averaging travel times in opposite directions). We will show how these two effects alter wave phase, and conclude that phase shifts in umbrae are predominantly thermal, whilst those in highly inclined field characteristic of penumbrae are essentially magnetic. The two effects are generally not additive.

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