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pro vyhledávání: '"Naegels, Daniel"'
We study the homogeneous breaking of spatial translation symmetry concomitantly with the spontaneous breaking of other internal and spacetime symmetries, including dilations. We use the symmetry breaking pattern as the only input to derive, via the c
Externí odkaz:
http://arxiv.org/abs/2409.15193
Autor:
Naegels, Daniel
These lecture notes are based on a six-hour series of lectures given at the XVII Modave summer school in mathematical physics, aimed at Ph.D. students in high-energy theoretical physics. The manuscript starts by briefly stating Goldstone's theorem an
Externí odkaz:
http://arxiv.org/abs/2110.14504
We study the concomitant breaking of spatial translations and dilatations in Ginzburg-Landau-like models, where the dynamics responsible for the symmetry breaking is described by an effective Mexican hat potential for spatial gradients. We show that
Externí odkaz:
http://arxiv.org/abs/2107.03073
Publikováno v:
Phys. Rev. D 102, 076011 (2020)
We study a paradigmatic model in field theory where a global $U(1)$ and scale symmetries are jointly and spontaneously broken. At zero density the model has a non-compact flat direction, which at finite density needs to be slightly lifted. The result
Externí odkaz:
http://arxiv.org/abs/2006.11047
Autor:
Musso, Daniele, Naegels, Daniel
Publikováno v:
Phys. Rev. D 101, 045016 (2020)
We study a massive real scalar field that breaks translation symmetry dynamically. Higher-gradient terms favour modulated configurations and neither finite density nor temperature are needed. In the broken phase, the energy density depends on the spa
Externí odkaz:
http://arxiv.org/abs/1907.04069
Publikováno v:
Phys. Rev. D 100, 066002 (2019)
We study the viability of spontaneous breaking of continuous symmetries in theories with Lifshitz scaling, according to the number of space-time dimensions $d$ and the dynamical scaling $z$. Then, the answer to the question in the title is no (quantu
Externí odkaz:
http://arxiv.org/abs/1903.11417
We study holographically Lifshitz-scaling theories with broken symmetries. In order to do this, we set up a bulk action with a complex scalar and a massless vector on a background which consists in a Lifshitz metric and a massive vector. We first stu
Externí odkaz:
http://arxiv.org/abs/1709.08383
Autor:
Argurio, Riccardo, Giribet, Gaston, Marzolla, Andrea, Naegels, Daniel, Sierra-Garcia, J. Anibal
Publikováno v:
JHEP 04 (2017) 007
We investigate symmetry breaking in two-dimensional field theories which have a holographic gravity dual. Being at large N, the Coleman theorem does not hold and Goldstone bosons are expected. We consider the minimal setup to describe a conserved cur
Externí odkaz:
http://arxiv.org/abs/1612.00771
Publikováno v:
Phys. Rev. D 92, 066009 (2015)
We consider a holographic set-up where relativistic invariance is broken by a chemical potential, and a non-abelian internal symmetry is broken spontaneously. We use the tool of holographic renormalization in order to infer what can be learned purely
Externí odkaz:
http://arxiv.org/abs/1507.00211
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