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Quantum Many Body Systems

Tensor networks and geometry for the modelling of disordered quantum many body systems

Tensor networks and geometry for the modelling of disordered quantum many body systems

... are many ways that tensor networks can aid the study of disordered ...is many-body localisation (MBL), the generalisation of Anderson localisation to interacting many-body ...

11

Conditional Independence in Quantum Many Body Systems

Conditional Independence in Quantum Many Body Systems

... I should also thank Robert K¨ onig and Stephanie Wehner for my early exposures in quantum information. They undoubtedly had a huge influence in the early stages of my research. It was from the discussions that I ...

117

Tensor networks and geometry for the modelling of disordered quantum many body systems

Tensor networks and geometry for the modelling of disordered quantum many body systems

... are many ways that tensor networks can aid the study of disordered ...is many-body localisation (MBL), the generalisation of Anderson localisation to interacting many-body ...

205

Quantum mechanics and the big world : order, broken symmetry and coherence in quantum many-body systems

Quantum mechanics and the big world : order, broken symmetry and coherence in quantum many-body systems

... real quantum mechanical energy into the dynamics as well, then these straight flowlines will turn into spirals which flow around the north-south axis as well as toward one of the ...the quantum col- lapse ...

171

Hild, Sebastian
  

(2016):


	Microscopy of quantum many-body systems out of equilibrium.


Dissertation, LMU München: Fakultät für Physik

Hild, Sebastian (2016): Microscopy of quantum many-body systems out of equilibrium. Dissertation, LMU München: Fakultät für Physik

... In this chapter, we address the open question of the nature of a many-body localization transition in two dimensions. A theoretical introduction to this topic is found in Chapter 6.4. We observe ...

140

Development of Tensor Network Algorithms for Studying Classical and Quantum Many Body Systems

Development of Tensor Network Algorithms for Studying Classical and Quantum Many Body Systems

... preparing many states of interest, either by creating starting states to aid DMRG calculations or preparing a particular ansatz as an ...for systems with 2 spatial dimensions, periodic boundary conditions, ...

133

The Interplay of Localization and Interactions in Quantum Many Body Systems

The Interplay of Localization and Interactions in Quantum Many Body Systems

... In the past decade, nonlinear light has emerged as another experimental tool to explore the physics of disorder. The essential idea is to fabricate single-mode photonic waveguides and then arrange them in an array such ...

245

Simulation of Strongly Correlated Quantum Many Body Systems

Simulation of Strongly Correlated Quantum Many Body Systems

... The concept of an effective thermal potential, obtained by tracing out sites from the thermal Gibbs state, gives a clear physical picture of the workings of belief propagation. Adding a site to a spin chain can modify ...

117

Quantum Steampunk: Quantum Information, Thermodynamics, Their Intersection, and Applications Thereof Across Physics

Quantum Steampunk: Quantum Information, Thermodynamics, Their Intersection, and Applications Thereof Across Physics

... in quantum many-body systems ...represent quantum states as phase- space distributions represent statistical-mechanical states ...underlying quantum-computation speedups [15– ...

257

Ground state and dynamical properties of many-body systems by non conventional Quantum Monte Carlo algorithms

Ground state and dynamical properties of many-body systems by non conventional Quantum Monte Carlo algorithms

... of Quantum Monte Carlo algorithms to use an optimal kernel form as a Guassian or a Lorentzian, which are good representations of a δ-function with separately tunable center and width, we have found a kernel that, ...

124

Efficient tomography of a quantum many-body system

Efficient tomography of a quantum many-body system

... small quantum systems in the laboratory [1]. Its application to systems with more than a few constituents ...precisely-controllable quantum systems that are well beyond the reach of QST ...

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Many-body physics and the capacity of quantum channels with memory

Many-body physics and the capacity of quantum channels with memory

... true quantum capacity of a given correlated channel { E n } , in most cases such variational expressions are extremely difficult to ...(quantum) many-body systems, where in contrast ...

33

Quantum trajectories and open many-body quantum systems

Quantum trajectories and open many-body quantum systems

... open quantum systems - microscopic systems exhibiting quantum coherence that are coupled to their environment - has become increasingly important in the past years, as the ability to control ...

66

Numerical Methods for Many-Body Quantum Dynamics

Numerical Methods for Many-Body Quantum Dynamics

... a many-body system can also be taken out of equilibrium via periodic (Floquet) driving—a strategy which has received recent attention in the context of novel Floquet phases of matter [38, 56, 110, 116, 138, ...

186

Mathematical Results on Quantum Many body Physics

Mathematical Results on Quantum Many body Physics

... microscopic quantum particles is at the heart of some of the most striking phenomena in condensed- matter physics such as Bose-Einstein condensation and ...realistic many-body systems, it is ...

197

Crossover between strong and weak measurement in interacting many body systems

Crossover between strong and weak measurement in interacting many body systems

... single-degree-of-freedom systems [28–31], where the WV-to-SV crossover is quite straightforward and is a smooth function of the interaction ...A many-body theory of variable strength quantum ...

21

Surviving Quantum Chaos: Weak Thermalization, Prethermalization and Quantum Many Body Scar States

Surviving Quantum Chaos: Weak Thermalization, Prethermalization and Quantum Many Body Scar States

... of many-body systems at low (but finite) temperatures by approximating the low-energy spectrum as a gas of non-interacting ...studying quantum dynamics of states at low (but finite) energy ...

213

Experimental signatures of an absorbing state phase transition in an open driven many body quantum system

Experimental signatures of an absorbing state phase transition in an open driven many body quantum system

... of quantum effects, ...current body of knowledge on out-of-equilibrium phase transitions, which is largely focused on classical many-body systems [6, ...

6

Probing quantum many-body dynamics in nuclear systems

Probing quantum many-body dynamics in nuclear systems

... Nuclear systems are interesting examples of many- body systems where up to about 500 nucleons (in the case of actinide collisions) may ...nuclear systems special to test quantum ...

8

Level and width statistics of the open many-body systems

Level and width statistics of the open many-body systems

... To begin with, N. Bohr’s compound nuclear picture[1], which tried to explain the narrow widths of the neutron resonances, implies the chaotic motion of the nucleons in the nuclei. In the 50’s, Wigner’s random matrix ...

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