Tighter sum uncertainty relations via variance and Wigner-Yanase skew information for N incompatible observables

• URL: http://arxiv.org/abs/2111.09147v1
• Date: Wed, 17 Nov 2021 14:33:56 GMT
• Title: Tighter sum uncertainty relations via variance and Wigner-Yanase skew information for N incompatible observables
• Authors: Qing-Hua Zhang and Shao-Ming Fei
• Abstract summary: We study the sum uncertainty relations based on variance and skew information for arbitrary finite N quantum mechanical observables. We derive new uncertainty inequalities which improve the exiting results about the related uncertainty relations.
• Score: 2.1320960069210484
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We study the sum uncertainty relations based on variance and skew information for arbitrary finite N quantum mechanical observables. We derive new uncertainty inequalities which improve the exiting results about the related uncertainty relations. Detailed examples are provided to illustrate the advantages of our uncertainty inequalities.

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