Tighter sum uncertainty relations via $(α,β,γ)$ weighted Wigner-Yanase-Dyson skew information

Abstract: We establish tighter uncertainty relations for arbitrary finite observables via $(\alpha,\beta,\gamma)$ weighted Wigner-Yanase-Dyson ($(\alpha,\beta,\gamma)$WWYD) skew information. The results are also applicable to the $(\alpha,\gamma)$ weighted Wigner-Yanase-Dyson ($(\alpha,\gamma)$WWYD) skew information and the weighted Wigner-Yanase-Dyson (WWYD) skew information. We also present tighter lower bounds of quantum channels and unitary channels via $(\alpha,\beta,\gamma)$ modified weighted Wigner-Yanase-Dyson ($(\alpha,\beta,\gamma)$MWWYD) skew information. Detailed examples are provided to illustrate tightness of our uncertainty relations.