Nearly linear light cones in long-range interacting quantum systems.

Structure and arrangement of photoreceptors in the retina of big eye kilka, Clupeonella grimmi (Kessler 1877)

The big eye kilka, Clupeonella grimmi, is a marine fish living in depth of 20 to 200 meter of the Caspian Sea. Its eye and retina were processed for histological and SEM studies. Paraffin embedded retina was cut radially and tangentially in 5 ?m thickness and stained with hematoxylin and eosin method. The unstained sections were manipulated for SEM image observations. Tangential retinal sect...

Quantum Mechanical Basis of Vision

The two striking components of retina, i.e., the light sensitive neural layer in the eye, by which it responds to light are (the three types of) color sensitive Cones and color insensitive Rods (which outnumber the cones 20:1). The interaction between electromagnetic radiation and these photoreceptors (causing transitions between cisand transstates of rhodopsin molecules in the latter) offers a...

Transport and elementary excitations of a Luttinger liquid

The low-temperature AC conductance of a one-dimensional electron system with a strong interaction of finite range is calculated by using linear response theory. The conductance factorizes into parts which depend on the internal properties of the system, and the external probe. For short-range interaction, the result resembles that for non-interacting electrons, but with the zero-frequency limit...

Many-body physics in long-range interacting quantum systems

Spectral Statistics of Interacting Electrons in Chaotic Quantum Dots

We study the spectral statistics of interacting electrons in clean chaotic quantum dots by numerical diagonalization. We show that interacting particles in chaotic dots exhibit the same short-range level correlations, predicted by random matrix theory, as interacting electrons in disordered systems, while they differ from each other with respect to long-range correlations. We further find that,...