105 citations · 256 across the 16 of their papers we have counts for
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Unitarity in Infinite Derivative Theories
Spyridon Talaganis
In this paper, we consider an infinite derivative scalar field action with infinite derivative kinetic and interaction terms. We establish that the theory is unitary if the correla…
Slavnov Identities for Infinite Derivative Theory of Gravity
Spyridon Talaganis
In this paper, we shall consider an infinite-derivative theory of gravity, with a view to making it renormalisable. First, we derive the modified superficial degree of divergence.…
Scale of non-locality for a system of particles
Spyridon Talaganis, Ali Teimouri
Higher derivative theories of gravity are associated with a mass scale to insure the correct dimensionality of the covariant derivatives. This mass scale is known as the scale of n…
Towards UV Finiteness of Infinite Derivative Theories of Gravity and Field Theories
Spyridon Talaganis
In this paper we will consider the ultraviolet (UV) finiteness of the most general one-particle irreducible (PI) Feynman diagrams within the context of ghost-free, infinite-deri…
Rotating black hole and entropy for modified theories of gravity
Spyridon Talaganis, Ali Teimouri
In this paper we obtain the entropy of the Kerr black hole for a number of modified theories of gravity. We show that as long as the deviation from Einstein Hilbert term consists p…
Hamiltonian Analysis for Infinite Derivative Field Theories and Gravity
Spyridon Talaganis, Ali Teimouri
Typically higher-derivative theories are unstable. Instabilities manifest themselves from extra propagating degrees of freedom, which are unphysical. In this paper, we will investi…