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Effective field theories as Lagrange spaces
We present a formulation of scalar effective field theories in terms of the geometry of Lagrange spaces. The horizontal geometry of the Lagrange...
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Computing tools for effective field theories
In recent years, theoretical and phenomenological studies with effective field theories have become a trending and prolific line of research in the...
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Effective Field Theories
This chapter explains Effective Descriptions, when either a microscopic description is lacking, or, is very difficult. Starting with elasticity and...
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Effective field theories on subspaces of the Bruhat-Tits tree
On two subspaces of the Bruhat-Tits tree, effective actions are calculated. The limits of these effective field theories are found to be the same...
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Effective field theories of axion, ALP and dark photon
With the help of Young tensor technique, we enumerate the complete and independent set of effective operators up to dim -8 for the extension of the...
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New covariant Feynman rules for effective field theories
We provide a new and completely general formalism to compute the effective field theory matching contributions from integrating out massive fields in...
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Effective field theories for dark matter pairs in the early universe: cross sections and widths
In order to predict the cosmological abundance of dark matter, an estimation of particle rates in an expanding thermal environment is needed. For...
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(In)equivalence of metric-affine and metric effective field theories
In a geometrical approach to gravity the metric and the (gravitational) connection can be independent and one deals with metric-affine theories. We...
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The quantum theory of gravitation, effective field theories, and strings: yesterday and today
This paper analyzes the effective field theory perspective on modern physics through the lens of the quantum theory of gravitational interaction. The...
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Complete one-loop renormalization-group equations in the seesaw effective field theories
In this paper, we derive the complete set of one-loop renormalization-group equations (RGEs) for the operators up to dimension-six (dim-6) in the...
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Nonrelativistic effective field theories with enhanced symmetries and soft behavior
We systematically explore the landscape of nonrelativistic effective field theories with a local S -matrix and enhanced symmetries and soft behavior....
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On effective field theories with celestial duals
We show that associativity of the tree-level OPE in a celestial CFT imposes constraints on the coupling constants of the corresponding bulk theory....
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Effective field theories and cosmological scattering equations
We propose worldsheet formulae for wavefunction coefficients of the massive non-linear sigma model (NLSM), scalar Dirac-Born-Infeld (DBI), and...
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Effective Field Theory
This chapter is dedicated to a discussion on the effective field theory (EFT) approach. Effective theories provide a simplified description of the...
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On democratic string field theories
We reexamine democratic open string field theories, namely, theories in which string fields are not constrained to a single picture number and...
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Quantum corrections to the effective potential in nonrenormalizable theories
AbstractFor the effective potential in the leading logarithmic approximation, we construct a renormalization group equation that holds for...
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Taming the landscape of effective theories
We introduce a generalized notion of finiteness that provides a structural principle for the set of effective theories that can be consistently...
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Effective gravitational couplings of Kaluza-Klein gauge theories
We study the effective gravitational couplings of four-dimensional gauge theories with eight supercharges. The class of theories we analyse are...
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Machine learning the breakdown of tame effective theories
Effective field theories endowed with a nontrivial moduli space may be broken down by several, distinct effects as the energy scales that are probed...
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Soft scalars in effective field theory
We derive a soft theorem for a massless scalar in an effective field theory with generic field content using the geometry of field space. This result...