An Inventory of Proposed and Enacted Sugar-Sweetened Beverage Policies at the State, Local, and Tribal Levels in the United States, 2014‒2023.

To inventory and describe trends in proposal and enactment of US sugar-sweetened beverage (SSB) policies at state, local, and Tribal levels, 2014-2023. We systematically searched 6 policy databases in 2021 (updated May 2023) using SSB-related search terms, identifying additional policies through snowball and online searches and a survey of food-policy experts. We reviewed 10 821 policies for inclusion and quantitatively coded included policies.

Time-reversal symmetry breaking superconductivity in the coexistence phase with magnetism in Fe pnictides.

We argue that superconductivity in the coexistence region with spin-density-wave (SDW) order in weakly doped Fe pnictides erdiffers qualitatively from the ordinary s(+-) state outside the coexistence region as it develops an additional gap component which is a mixture of intrapocket singlet (s(++)) and interpocket spin-triplet pairings (the t state). The coupling constant for the t channel is proportional to the SDW order and involves interactions that do not contribute to superconductivity outside of the SDW region. We argue that the s(+-)- and t-type superconducting orders coexist at low temperatures, and the relative phase between the two is, in general, different from 0 or π, manifesting explicitly the breaking of the time-reversal symmetry promoted by long-range SDW order.