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Parisi-Sourlas supergravity
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DOI：10.1088/1361-6382/abab65.png)
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A manifestly diffeomorphism invariant exact renormalization group requires extra diffeomorphism invariant ultraviolet regularisation at some effective cutoff scale ?. This motivates construction of a 'Parisi-Sourlas' supergravity, in analogy with the gauge theory case, where the superpartner fields have the wrong spin-statistics such that they can become Pauli-Villars regulator fields after spontaneous symmetry breaking. We show that in contrast to gauge theory, the free theory around flat space is already non-trivial and in a sense already displays some spontaneous symmetry breaking. We show that the fluctuating fields form multiplets whose mass matrices imply that the fields propagate into each other not only with the expected 1/p(2)but also through propagators with improved ultraviolet properties, namely 1/p(4)and 1/p(6), despite the fact that the action contains a maximum of two space-time derivatives.
Keyword:
Wilsonian renormalization group
Parisi-Sourlas
supergravity
Pauli-Villars regularisation
期刊
IF:
3.7
论文数:
1.3W
被引数:
3.0W
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