Noncommutative gauge and gravity theories and geometric Seiberg–Witten map
Paolo Aschieri, Leonardo Castellani
Abstract
Abstract We give a pedagogical account of noncommutative gauge and gravity theories, where the exterior product between forms is deformed into a $$\star$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>⋆</mml:mo> </mml:math> -product via an abelian twist (e.g. the Groenewold–Moyal twist). The Seiberg–Witten map between commutative and noncommutative gauge theories is introduced. It allows to express the action of noncommutative Einstein gravity coupled to spinor fields in terms of the usual commutative action with commutative fields plus extra interaction terms dependent on the noncommutativity parameter.
Topics & Concepts
Noncommutative geometryCommutative propertyNoncommutative quantum field theoryStar productPhysicsGauge theoryNoncommutative algebraic geometryMathematical physicsTwistSpinorAction (physics)Theoretical physicsPure mathematicsMathematicsQuantum mechanicsGeometryNoncommutative and Quantum Gravity TheoriesBlack Holes and Theoretical PhysicsCosmology and Gravitation Theories