scholarly journals Propagation of shock waves in interacting higher spin wave equations

1973 ◽  
Vol 30 (3) ◽  
pp. 201-209 ◽  
Author(s):  
J. Madore ◽  
W. Tait
Keyword(s):  
Shock Waves ◽  
Spin Wave ◽  
Wave Equations ◽  
Higher Spin

Gel’fand-Yaglom Wave Equations based on the Representation (3/2,5/2) ⊕ (1/2,5/2) ⊕ (-1/2,5/2) ⊕ (-3/2,5/2). Charge and Causality

1985 ◽  
Vol 40 (10) ◽  
pp. 1062-1065
Author(s):  
C. G. Koutroulos
Keyword(s):  
Electromagnetic Field ◽  
Spin Wave ◽  
Wave Equations ◽  
External Electromagnetic Field ◽  
Higher Spin

There are no examples of higher spin wave-equations of the Gel'fand-Yaglom form based on the representation (3/2, 5/2) ⊕ (1/2, 5/2) ⊕ (-1/2, 5/2) ⊕ (-3/2, 5/2) having definite charge and propagating causally in an external electromagnetic field.

Arbitrary‐Spin Wave Equations and Lorentz Invariance

1971 ◽  
Vol 12 (5) ◽  
pp. 835-840 ◽  
Author(s):  
M. Seetharaman ◽  
J. Jayaraman ◽  
P. M. Mathews
Keyword(s):  
Spin Wave ◽  
Wave Equations ◽  
Lorentz Invariance ◽  
Arbitrary Spin

scholarly journals On conformal higher spin wave operators

2014 ◽  
Vol 2014 (6) ◽  
Author(s):  
Teake Nutma ◽  
Massimo Taronna
Keyword(s):  
Spin Wave ◽  
Wave Operators ◽  
Higher Spin

Paper 11: Progressive Shock Waves in Pipes with Sudden Area Discontinuity

1969 ◽  
Vol 184 (7) ◽  
pp. 28-35
Author(s):  
J. P. Srivastava
Keyword(s):  
Shock Waves ◽  
Wave Equations ◽  
Pressure Ratio ◽  
Incident Shock ◽  
Graphical Form ◽  
Sectional Area ◽  
Cross Sectional ◽  
Reflection And Transmission ◽  
Sonic Flow ◽  
Alternative Solutions

An investigation into the propagation, reflection, and transmission of progressive shock waves through sudden changes in pipe cross-sectional area is described. The boundary conditions for relating the shock wave equations upstream and downstream of the area discontinuity are obtained by considering the flow at the junction as quasi-steady. Computer programmes are developed to analyse various alternative solutions to the problem, and the experimental results obtained on a 2-in diameter shock tube are reported. Incident shock waves of pressure ratio up to 4·83 (producing sonic flow) and pipe-diameter ratios up to 4:1 are considered and the results are presented in graphical form for future use.

scholarly journals Off-shell higher-spin fields in AdS4 and external currents

2021 ◽  
Vol 2021 (12) ◽  
Author(s):  
N.G. Misuna
Keyword(s):  
Spin System ◽  
Wave Equations ◽  
Current System ◽  
De Sitter ◽  
Arbitrary Integer ◽  
Shell System ◽  
Integer Spin ◽  
Higher Spin ◽  
Spin Fields ◽  
Higher Spin Fields

Abstract We construct an unfolded system for off-shell fields of arbitrary integer spin in 4d anti-de Sitter space. To this end we couple an on-shell system, encoding Fronsdal equations, to external Fronsdal currents for which we find an unfolded formulation. We present a reduction of the Fronsdal current system which brings it to the unfolded Fierz-Pauli system describing massive fields of arbitrary integer spin. Reformulating off-shell higher-spin system as the set of Schwinger–Dyson equations we compute propagators of higher-spin fields in the de Donder gauge directly from the unfolded equations. We discover operators that significantly simplify this computation, allowing a straightforward extraction of wave equations from an unfolded system.

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