Essays about: "Superfluid"

Showing result 1 - 5 of 6 essays containing the word Superfluid.

1. 1. Rotational Properties of Lee-Huang-Yang Bosonic Condensates from One to Two Dimensions

   University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

   Author : Hjalmar Holmström; [2022]
   Keywords : BEC; Bose-Einstein condensate; quantum fluid; Quantum mechanics; LHY; LHY-fluid; Lee-Huang-Yang; Rotating BEC; BEC droplet; Physics and Astronomy;

   Abstract : This thesis covers the work of a numerical examination of the rotational properties of a two-component Bose-Einstein condensate (BEC) utilizing the beyond mean-field extended Gross-Pitaevskii equation for a specified set of parameters. These parameters are chosen to cancel the strength of the mean-field interaction, which makes the system predominantly governed by the next order beyond the mean-field Lee-Huang-Yang (LHY) term. READ MORE

3. 2. Models of superconductors with correlated defects

   University essay from KTH/Fysik

   Author : Jakob Bolin; [2022]
   Keywords : Quantum phase transition; correlated disorder; 3D XY model; Monte Carlo simulation; worm algorithm; winding number; superfluid density; Kvantfasövergång; korrelerad oordning; 3D XY modell; Monte Carlo simulering; worm algoritmen; vindlingstal; supraledande täthet;

   Abstract : The quantum phase transition between groundstates of a system with correlated disorder near absolute zero is studied. The computations are based on Monte Carlo methods and the worm algorithm which is an effective method to simulate basic models like the Ising and XY model by making use of global Monte Carlo moves given by modified random walks. READ MORE

4. 3. Quantum ring with tangential dipoles

   University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

   Author : Carmen López Jurado; [2021]
   Keywords : Bose-Einstein condensate; Quantum Droplets; Gross-Pitaevskii equation; Physics and Astronomy;

   Abstract : This Bachelor thesis studies the formation of quantum droplets in a dilute dipolar Bose Einstein Condensate with the initial shape of a torus. The main question to address is how this formation occurs as the magnetic dipole moment of the particles changes orientation with respect to the xy plane. READ MORE

5. 4. Motion of a Gaussian Through a 2D Dilute BEC Droplet

   University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

   Author : Zhanna Kuhrij; [2020]
   Keywords : Bose-Einstein Condensate; BEC; Droplet; Dilute; Liquid; Quantum Mechanics; Fluid Dynamics; Superfluid; Superfluidity; Quantum Fluctuations; LHY-correction; Flow patterns; Gaussian; 2D; Vortices; Gross-Pitaevskii Equation; Physics and Astronomy;

   Abstract : In the last decades, Bose-Einstein Condensates (BECs) have been a research topic of great interest. In 2015, a new type of liquid was found - dilute self-bound BEC droplets that have orders of magnitude lower density than air. These droplets are not predicted by classical van der Waals theory, but are stabilised by quantum fluctuations. READ MORE

6. 5. Virtual instrumentation: Introduction of virtual

   University essay from Institutionen för systemteknik

   Author : Erika Ödlund; [2007]
   Keywords : Flow meters; LHC; PLC; Superfluid helium; Virtual instrumentation;

   Abstract : The Large Hadron Collider (LHC) is the next large particle accelerator developed at CERN, constructed to enable studies of particles. The acceleration of the particles is carried out using magnets operating at about 1.9 K, a temperature achieved by regulating flow of superfluid helium. READ MORE