scholarly journals String field theory solution corresponding to constant background magnetic field

2017 ◽  
Vol 2017 (1) ◽  
Author(s):  
Nobuyuki Ishibashi ◽  
Isao Kishimoto ◽  
Tomohiko Takahashi
Keyword(s):  
Magnetic Field ◽  
Field Theory ◽  
String Field Theory ◽  
Background Magnetic Field ◽  
Theory Solution

scholarly journals NONCOMMUTATIVITY FROM THE SYMPLECTIC POINT OF VIEW

2006 ◽  
Vol 21 (26) ◽  
pp. 5359-5369 ◽  
Author(s):  
E. M. C. ABREU ◽  
C. NEVES ◽  
W. OLIVEIRA
Keyword(s):  
Magnetic Field ◽  
Field Theory ◽  
String Theory ◽  
Point Of View ◽  
Field Theories ◽  
Lagrangian Description ◽  
Moyal Product ◽  
Commutative Field ◽  
Background Magnetic Field

The great deal in noncommutative (NC) field theories started when it was noted that NC spaces naturally arise in string theory with a constant background magnetic field in the presence of D-branes. In this work we explore how NC geometry can be introduced into a commutative field theory besides the usual introduction of the Moyal product. We propose a nonperturbative systematic new way to introduce NC geometry into commutative systems, based mainly on the symplectic approach. Further, as example, this formalism describes precisely how to obtain a Lagrangian description for the NC version of some systems reproducing well-known theories.

RADIATIVE EFFECTS IN A CONSTANT MAGNETIC FIELD USING THE QUANTUM MECHANICAL PATH-INTEGRAL

1994 ◽  
Vol 09 (23) ◽  
pp. 2167-2178 ◽  
Author(s):  
D.G.C. MCKEON ◽  
T.N. SHERRY
Keyword(s):  
Magnetic Field ◽  
Field Theory ◽  
Quantum Field Theory ◽  
Path Integral ◽  
Constant Magnetic Field ◽  
Quantum Mechanical ◽  
Quantum Field ◽  
Matrix Elements ◽  
Loop Momentum ◽  
Background Magnetic Field

It has been shown how evaluation of matrix elements of the form <x| exp −iHt|y> using the quantum mechanical path-integral allows one to determine radiative corrections in quantum field theory without encountering loop momentum integrals. In this paper we show how this technique can be applied when there is a constant background magnetic field contributing to the “Hamiltonian” H.

scholarly journals Difficulties in learning the introductory magnetic field theory in the first years of university

2004 ◽  
Vol 88 (3) ◽  
pp. 443-464 ◽  
Author(s):  
Jenaro Guisasola ◽  
José M. Almudí ◽  
José L. Zubimendi
Keyword(s):  
Magnetic Field ◽  
Field Theory
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