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- Title
Quantum Brascamp–Lieb Dualities.
- Authors
Berta, Mario; Sutter, David; Walter, Michael
- Abstract
Brascamp–Lieb inequalities are entropy inequalities which have a dual formulation as generalized Young inequalities. In this work, we introduce a fully quantum version of this duality, relating quantum relative entropy inequalities to matrix exponential inequalities of Young type. We demonstrate this novel duality by means of examples from quantum information theory—including entropic uncertainty relations, strong data-processing inequalities, super-additivity inequalities, and many more. As an application we find novel uncertainty relations for Gaussian quantum operations that can be interpreted as quantum duals of the well-known family of 'geometric' Brascamp–Lieb inequalities.
- Subjects
MATRIX exponential; ENTROPIC uncertainty; MATRIX inequalities; QUANTUM entropy; QUANTUM information theory
- Publication
Communications in Mathematical Physics, 2023, Vol 401, Issue 2, p1807
- ISSN
0010-3616
- Publication type
Article
- DOI
10.1007/s00220-023-04678-w