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Holographic plasmon relaxation with and without broken translations

Baggioli, Matteo (author)
UAM, CSIC, Inst Fis Teor, C Nicolas Cabrera 13-15, Madrid 28049, Spain.
Gran, Ulf, 1973 (author)
Chalmers Univ Technol, Dept Phys, Div Theoret Phys, SE-41296 Gothenburg, Sweden.,Chalmers tekniska högskola,Chalmers University of Technology
Alba, Amadeo Jimenez (author)
UAM, CSIC, Inst Fis Teor, C Nicolas Cabrera 13-15, Madrid 28049, Spain.
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Tornsö, Marcus, 1993 (author)
Chalmers Univ Technol, Dept Phys, Div Theoret Phys, SE-41296 Gothenburg, Sweden.,Chalmers tekniska högskola,Chalmers University of Technology
Zingg, Tobias (author)
Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Stockholm Univ, NORDITA, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.,Nordiska institutet för teoretisk fysik (Nordita),Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)
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UAM, CSIC, Inst Fis Teor, C Nicolas Cabrera 13-15, Madrid 28049, Spain Chalmers Univ Technol, Dept Phys, Div Theoret Phys, SE-41296 Gothenburg, Sweden. (creator_code:org_t)
SPRINGER, 2019
2019
English.
In: Journal of High Energy Physics (JHEP). - : SPRINGER. - 1126-6708 .- 1029-8479. ; :9
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We study the dynamics and the relaxation of bulk plasmons in strongly coupled and quantum critical systems using the holographic framework. We analyze the dispersion relation of the plasmonic modes in detail for an illustrative class of holographic bottom-up models. Comparing to a simple hydrodynamic formula, we entangle the complicated interplay between the three least damped modes and shed light on the underlying physical processes. Such as the dependence of the plasma frequency and the effective relaxation time in terms of the electromagnetic coupling, the charge and the temperature of the system. Introducing momentum dissipation, we then identify its additional contribution to the damping. Finally, we consider the spontaneous symmetry breaking (SSB) of translational invariance. Upon dialing the strength of the SSB, we observe an increase of the longitudinal sound speed controlled by the elastic moduli and a decrease in the plasma frequency of the gapped plasmon. We comment on the condensed matter interpretation of this mechanism.

Subject headings

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
NATURVETENSKAP  -- Fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences (hsv//eng)
NATURVETENSKAP  -- Fysik -- Annan fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Other Physics Topics (hsv//eng)
NATURVETENSKAP  -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Keyword

Holography and condensed matter physics (AdS
CMT)
Gauge-gravity correspondence

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