5 papers
Field Theory of Dissipative Systems with Gapped Momentum States
Matteo Baggioli, Mikhail Vasin, Vadim Brazhkin +1
We develop a field theory with dissipation based on a finite range of wave propagation and associated gapped momentum states in the wave spectrum. We analyze the properties of the…
Effective Theory of Superconductivity in Strongly-Coupled Amorphous Materials
Matteo Baggioli, Chandan Setty, Alessio Zaccone
A theory of phonon-mediated superconductivity in strong-coupling amorphous materials is developed based on an effective description of structural disorder and its effect on the vib…
Unified theory of vibrational spectra in amorphous materials
Matteo Baggioli, Alessio Zaccone
The phonon spectra of solids, described through the measurable vibrational density of states (VDOS), provide a wealth of information about the underlying atomic structure and bondi…
Theory of the phonon spectrum in host-guest crystalline solids with avoided crossing
Matteo Baggioli, Bingyu Cui, Alessio Zaccone
We develop an analytical model to describe the phonon dispersion relations of host-guest lattices with heavy guest atoms (rattlers). Crucially, the model also accounts for phonon d…
Hydrodynamics of disordered marginally-stable matter
Matteo Baggioli, Alessio Zaccone
We study the vibrational spectra and the specific heat of disordered systems using an effective hydrodynamic framework. We consider the contribution of diffusive modes, i.e. the 'd…