A top-down model for layered holographic strange metals

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dc.contributor.authorLexell, Olle
dc.contributor.departmentChalmers tekniska högskola / Institutionen för fysiksv
dc.contributor.examinerGran, Ulf
dc.contributor.supervisorGran, Ulf
dc.date.accessioned2021-02-10T15:20:56Z
dc.date.available2021-02-10T15:20:56Z
dc.date.issued2021sv
dc.date.submitted2020
dc.description.abstractThe AdS/CFT correspondence is a potentially powerful tool in describing condensed matter systems for which our current theoretical understanding is lacking. This is because it can be used to map a strongly coupled field theory to a weakly coupled gravitational theory. In this thesis I describe some aspects of the AdS/CFT correspondence and look at a top-down model. This model is built upon a large number of D3 and D5 branes with a D7 probe brane. The goal is to see whether this model can be used to describe aspects of the strange metal phase that is found in layered high-temperature superconductors. Starting from a weakly coupled string theory setting I derive the temperaturedependence of a DC current in different regimes, as well as dispersion relations for electromagnetic fluctuations. There is a possibility of obtaining resistivity that matches the linear in T dependence for the resistivity in strange metals. This is done by adjusting the number of D5 branes depending on the temperature and the charge density, which is obtained holographically. With a particular choice of boundary conditions, plasmonic dispersion relations are found, as required. This is the first layered top-down model with this behaviour for the current available in its parameter-space. While it has not produced correct predictions without an adjustment of the parameter-space, the freedoms granted from the said parameter-space makes it possible that this model could describe other layered systems that lacks quasi-particles, and not just strange metals.sv
dc.identifier.coursecodeTIFX61sv
dc.identifier.urihttps://hdl.handle.net/20.500.12380/302197
dc.language.isoengsv
dc.setspec.uppsokPhysicsChemistryMaths
dc.subjectAdS/CFTsv
dc.subjectTop-downsv
dc.subjectD3-D5 geometrysv
dc.subjectD7 probe branesv
dc.subjectholographic strange metalssv
dc.subjectholographic plasmonssv
dc.subjectmixed boundary conditionssv
dc.subjectresistivity linear in temperaturesv
dc.titleA top-down model for layered holographic strange metalssv
dc.type.degreeExamensarbete för masterexamensv
dc.type.uppsokH
local.programmePhysics and astronomy (MPPAS), MSc
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