Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Aavishkar A. Patel"'
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043143 (2023)
We extend the theory of shot noise in coherent metals to shot noise in strange metals without quasiparticle excitations. This requires a generalization of the Boltzmann equation with a noise source to distribution functions which depend independently
Externí odkaz:
https://doaj.org/article/1354538cad284d4493e61286f177477b
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033434 (2020)
A theoretical understanding of the enigmatic linear-in-temperature (T) resistivity, ubiquitous in strongly correlated metallic systems, has been a long sought-after goal. Furthermore, the slope of this robust T-linear resistivity is also observed to
Externí odkaz:
https://doaj.org/article/8188dab24bdf4672b0610c09a0954afe
Publikováno v:
Physical Review X, Vol 8, Iss 2, p 021049 (2018)
Despite much theoretical effort, there is no complete theory of the “strange” metal state of the high temperature superconductors, and its linear-in-temperature T resistivity. Recent experiments showing an unexpected linear-in-field B magnetoresi
Externí odkaz:
https://doaj.org/article/d19c749669214c148cfd8830df0a21cf
Publikováno v:
Physical Review X, Vol 7, Iss 3, p 031047 (2017)
We study scrambling, an avatar of chaos, in a weakly interacting metal in the presence of random potential disorder. It is well known that charge and heat spread via diffusion in such an interacting disordered metal. In contrast, we show within pertu
Externí odkaz:
https://doaj.org/article/011d397916a44aa098930f751483b2ed
We investigate the many-body quantum chaos of non-Fermi liquid states with Fermi surfaces in two spatial dimensions by computing their out-of-time-order correlation functions. Using a recently proposed large $N$ theory for the critical Fermi surface,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::880c19455712d0cfb2f5e8c8798a65fb
http://arxiv.org/abs/2202.01845
http://arxiv.org/abs/2202.01845
A pair density wave (PDW) is a superconductor whose order parameter is a periodic function of space, without an accompanying spatially-uniform component. Since PDWs are not the outcome of a weak-coupling instability of a Fermi liquid, a generic pairi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69e1363b1032c7e76ea4cebc58615afe
Publikováno v:
Physical Review B. 103
We describe the large $N$ saddle point, and the structure of fluctuations about the saddle point, of a theory containing a sharp, critical Fermi surface in two spatial dimensions. The theory describes the onset of Ising order in a Fermi liquid, and c
Publikováno v:
Physical Review Research. 2
This paper compares lattice models of coupled SYK quantum dots and the Hubbard model in single-site DMFT to study the slope-invariant $T$-linear resistivity.
The Sachdev-Ye-Kitaev (SYK) model describes electrons with random and all-to-all interactions, and realizes a many-body state without quasiparticle excitations, and a non-vanishing extensive entropy $S_0$ in the zero temperature limit. Its low energy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c41a3cfec14918ba5a65bb84d191f9d1
http://arxiv.org/abs/1912.02835
http://arxiv.org/abs/1912.02835
Autor:
Aavishkar A. Patel, Peter Lunts
We compute the scrambling rate at the antiferromagnetic (AFM) quantum critical point, using the fixed point theory of Phys. Rev. X $\boldsymbol{7}$, 021010 (2017). At this strongly coupled fixed point, there is an emergent control parameter $w \ll 1$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd60f1d3d8bab4e8c9e413423f79001e
http://arxiv.org/abs/1907.12749
http://arxiv.org/abs/1907.12749