The two ∇ R type invariants and their higher order generalisation
Mar 13, 2015Citations per year
Abstract: (Springer)
We show that there are two distinct classes of ∇ R type supersymmetry invariants in maximal supergravity. The second class includes a coupling in F∇ R that generalises to 1/8 BPS protected F^{2}^{k} ∇ R couplings. We work out the supersymmetry constraints on the corresponding threshold functions, and argue that the functions in the second class satisfy to homogeneous differential equations for arbitrary k ≥ 1, such that the corresponding exact threshold functions in type II string theory should be proportional to Eisenstein series, which we identify. This analysis explains in particular that the exact ∇ R threshold function is the sum of an Eisenstein function and a solution to an inhomogeneous Poisson equation in string theory.Note:
- 53 pages
- Extended Supersymmetry
- Nonperturbative Effects
- Supergravity Models
- Supersymmetric Effective Theories
- supersymmetry: constraint
- string model: Type II
- differential equations
- Poisson equation
- supergravity
- higher-order
References(53)
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