Browsing Física de Partículas by Subject "Effective Field Theories"
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Gapless and gapped holographic phonons
(Springer, 2020)We study a holographic model where translations are both spontaneously and explicitly broken, leading to the presence of (pseudo)-phonons in the spectrum. The weak explicit breaking is due to two independent mechanisms: ... -
Roper resonances and quasi-normal modes of Skyrmions
(Springer, 2018)Radial vibrations of charge one hedgehog Skyrmions in the full Skyrme model are analysed. We investigate how the properties of the lowest resonance modes (quasi normal modes) — their frequencies and widths — depend on the ...