DISPERSION FORMULAS IN QFTS, CFTS AND HOLOGRAPHY

Dispersion formulas in QFTs, CFTs and holography

Abstract We study momentum space NUTRI MULTI dispersion formulas in general QFTs and their applications for CFT correlation functions.We show, using two independent methods, that QFT dispersion formulas can be written in terms of causal commutators.The first derivation uses analyticity properties of retarded correlators in momentum space.The second

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Combining damage and fracture mechanics to model calving

Calving of icebergs is a major negative component of polar ice-sheet mass balance.Here we present a new calving model relying on both continuum damage mechanics and linear elastic fracture mechanics.This combination accounts for both NUTRI MULTI the slow sub-critical surface crevassing and the rapid propagation of crevasses when calving occurs.Firs

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