6 papers
Emergent time and more from wavefunction collapse in general relativity
Sung-Sik Lee
In this paper, we further develop a recently proposed theory of time based on wavefunction collapse in general relativity. It is based on the postulations that quantum states, whic…
Classification of non-Fermi liquids and universal superconducting fluctuations
Shubham Kukreja, Dawson M. Willerton, Sung-Sik Lee
In quantum critical metals, a plethora of different non-Fermi liquids arises depending on the nature of critical fluctuations coupled to Fermi surfaces. In this paper, we classify…
A theory of time based on wavefunction collapse
Sung-Sik Lee
We propose that moments of time arise through the failed emergence of the temporal diffeomorphism as gauge symmetry, and that the passage of time is a continual process of an insta…
Quantum criticality in cuprate superconductors revealed by optical conductivity measurement
Hwiwoo Park, Sung-Sik Lee, G. D. Gu +1
The ubiquitous temperature ()-linear behaviour of the transport scattering rate in the normal state of strongly correlated electron systems is called strange metallicity \cite{z…
Ultraviolet/infrared mixing-driven suppression of Kondo screening in the antiferromagnetic quantum critical metal
Francisco Borges, Peter Lunts, Sung-Sik Lee
We study a magnetic impurity immersed in the two-dimensional antiferromagnetic quantum critical metal (AFQCM), using the field-theoretic functional renormalization group. Critical…
Dynamical kinetic energy quenching in the antiferromagnetic quantum critical metals
Anton Borissov, Vladimir Calvera, Sung-Sik Lee
We study the dynamics of critical spin fluctuations and hot electrons at the metallic antiferromagnetic quantum critical points with and spin symmetries, building upon…