324 citations · 2.7k across the 36 of their papers we have counts for
26 papers · 1 filter
Heavy neutron stars from light scalars
Reuven Balkin, Javi Serra, Konstantin Springmann +2
We study how light scalar fields can change the stellar landscape by triggering a new phase of nuclear matter. Scalars coupled to nucleons can develop a non-trivial expectation val…
White dwarfs as a probe of exceptionally light QCD axions
Reuven Balkin, Javi Serra, Konstantin Springmann +2
We study the effects of exceptionally light QCD axions on the stellar configuration of white dwarfs. At finite baryon density, the non-derivative coupling of the axion to nucleons…
Runaway Relaxion from Finite Density
Reuven Balkin, Javi Serra, Konstantin Springmann +2
Finite density effects can destabilize the metastable vacua in relaxion models. Focusing on stars as nucleation seeds, we derive the conditions that lead to the formation and runaw…
Density Induced Vacuum Instability
Reuven Balkin, Javi Serra, Konstantin Springmann +2
We consider matter density effects in theories with a false ground state. Large and dense systems, such as stars, can destabilize a metastable minimum and allow for the formation o…
The Present and Future of Four Top Operators
Giovanni Banelli, Ennio Salvioni, Javi Serra +2
We study the phenomenology of a strongly-interacting top quark at future hadron and lepton colliders, showing that the characteristic four-top contact operators give rise to the mo…
The QCD Axion at Finite Density
Reuven Balkin, Javi Serra, Konstantin Springmann +1
We show how the properties of the QCD axion change in systems at finite baryonic density, such as neutron stars. At nuclear saturation densities, where corrections can be reliably…