Essays about: "Bose-Einstein condensates"
Showing result 1 - 5 of 14 essays containing the words Bose-Einstein condensates.
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1. Beyond the Gross-Pitaevskii Equation: A Perturbative Approach
University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Teknisk fysik (CI)Abstract : We propose and implement a beyond Gross-Pitaevskii approach based on Many-Body Perturbation theory (MBPT) for the study of Bose-Einstein Condensate (BECs) ground states. Two partitions of the system Hamiltonian are considered. READ MORE
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2. Rotational Properties of Lee-Huang-Yang Bosonic Condensates from One to Two Dimensions
University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionenAbstract : 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
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3. Beyond Mean-Field Description of Bose-Einstein Condensate
University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionenAbstract : This thesis work is on the theoretical description of dilute Bose-Einstein condensates (BEC) that are non-uniform, meaning that more than one single-particle state is occupied. This phenomenon is usually called quantum depletion. READ MORE
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4. Conservative high order collocation methods for nonlinear Schrödinger equations
University essay from Stockholms universitet/FysikumAbstract : In this thesis, we investigate the numerical solution of time-dependent nonlinear Schrödinger equations (more specifically, the Gross-Pitaevskii equation) that appear in the modeling of Bose-Einstein condensates. Since the model is known to conserve important physical invariants, such as mass and energy of the condensate, our goal is to study the importance of reproducing the conservation on the discrete level. READ MORE
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5. Computation of Stationary States for Rotating Bose-Einstein Condensates using Spectral Methods
University essay from KTH/Skolan för teknikvetenskap (SCI)Abstract : The Bose-Einstein condensate is a phase of matter that arises when cooling gases of bosons to extremely low temperatures. When studying these condensates one may use the Gross-Pitaevskii equation, which is a non-linear variant of the Schrödinger equation. READ MORE