302 citations · 2.3k across the 33 of their papers we have counts for
33 papers
Renormalisation of IR divergences and holography in de Sitter
Adam Bzowski, Paul McFadden, Kostas Skenderis
We formulate a renormalisation procedure for IR divergences of tree-level in-in late-time de Sitter correlators. These divergences are due to the infinite volume of spacetime and a…
-hypergeometric functions and creation operators for Feynman and Witten diagrams
Francesca Caloro, Paul McFadden
Both Feynman integrals and holographic Witten diagrams can be represented as multivariable hypergeometric functions of a class studied by Gel'fand, Kapranov & Zelevinsky known as G…
Shift operators from the simplex representation in momentum-space CFT
Francesca Caloro, Paul McFadden
We derive parametric integral representations for the general -point function of scalar operators in momentum-space conformal field theory. Recently, this was shown to be expres…
Missing odd-order Shapiro steps do not uniquely indicate fractional Josephson effect
P. Zhang, S. Mudi, M. Pendharkar +10
Topological superconductivity is expected to spur Majorana zero modes -- exotic states that are also considered a quantum technology asset. Fractional Josephson effect is their man…
A handbook of holographic 4-point functions
Adam Bzowski, Paul McFadden, Kostas Skenderis
We present a comprehensive discussion of tree-level holographic -point functions of scalar operators in momentum space. We show that each individual Witten diagram satisfies the…
Conformal correlators as simplex integrals in momentum space
Adam Bzowski, Paul McFadden, Kostas Skenderis
We find the general solution of the conformal Ward identities for scalar -point functions in momentum space and in general dimension. The solution is given in terms of integrals…