A bstract There are two canonical approaches to treating the Standard Model as an Effective Field Theory (EFT): EFT (SMEFT), expressed in electroweak symmetric phase utilizing Higgs doublet, and (HEFT), broken physical boson independent set of Goldstone bosons. HEFT encompasses SMEFT, so understanding whether SMEFT is sufficient motivates identifying UV theories that require their low energy li...

Effective field theory is applied to finite-density systems with two-particle interactions exhibiting an unnaturally large scattering length, such as neutron matter. A new organizational scheme, identified for a large number of spacetime dimensions, allows for convergent analytic calculations in many-body systems and is similar to the hole-line expansion of traditional nuclear physics. PACS num...

After having played a major role in the foundation of QCD, heavy hadron spectroscopy has witnessed in the last years a renewal of interest led by the many new data coming from the B factories, CLEO and the Tevatron and by the progress made in the theoretical methods. I will summarize the former and mostly focus on the latter. Much of the theoretical progress in the physics of heavy hadrons come...

Theoretical data obtained from physically sensible field and string theory models suggest that gravitational Effective Field Theories (EFTs) live on islands are tiny compared to current general bounds determined unitarity, causality, crossing symmetry, a good high-energy behavior. In this work, we present explicit perturbative nonperturbative $2 \to 2$ graviton scattering amplitudes their assoc...

A bstract We prove a precise form of AdS bulk locality by deriving analytical two-sided bounds on Wilson coefficients. Our are the coefficients themselves, rather than their ratios, as is typically found in literature. Inspired Celestial amplitudes program flat space, we perform transform CFT Mellin amplitude four identical scalars. Using crossing symmetric dispersion relation (CSDR), express r...

Lattice quantum chromodynamics calculations of multibaryon systems with physical quark masses would start a new age ab initio predictions in nuclear physics. Performed on finite grid, such demand extrapolation their finite-volume numerical results to free-space quantities. Such extraction the information can be carried out fitting effective field theories (EFTs) directly or utilizing L\"uscher ...

A bstract At finite density, the spontaneous breakdown of an internal non-Abelian symmetry dictates, along with gapless modes, modes whose gap is fixed by algebra and proportional to chemical potential: gapped Goldstones. Generically these states comparable that other non-universal excitations or energy scale where dynamics strongly coupled. This makes it non-straightforward derive a universal ...

A bstract We observe a direct relation between the existence of fundamental axionic strings, dubbed EFT and infinite distance limits in 4d $$ \mathcal{N} N = 1 EFTs coupled to gravity. The backreaction strings can be interpreted as RG flow their couplings, allows one probe different regimes within field space...

The amplitude for multiple soft gluon emissions, ordered in their relative softness, can be written as a product of infrared (IR) divergent loop-expanded currents and the matrix elements. In more recent work, Angeles-Martinez, Forshaw Seymour \cite{Angeles-Martinez:2016dph} (AMFS) showed that result this fact re-expressed an evolution approach, involving \textit{IR finite} one-loop insertions w...

A bstract The axion is much lighter than all other degrees of freedom introduced by the Peccei-Quinn mechanism to solve strong CP problem. It therefore natural use an effective field theory (EFT) describe its interactions. Loop processes calculated in EFT may however explicitly depend on ultraviolet cutoff. In general, UV cutoff not uniquely defined, but dimensionful couplings suggest identify ...