Sökning: "spinn"
Visar resultat 1 - 5 av 32 uppsatser innehållade ordet spinn.
1. Spin-Glass Behaviour in Ordered Solids
Kandidat-uppsats, Uppsala universitet/MaterialteoriSammanfattning : The spin-glass is a peculiar magnetic phase, exhibiting non-trivial dynamics at low temperatures, characterized by an continuously evolving state without long-range order. The behavior requires some degree of disorder to occur, often in the way of impurities or random exchange energy between the spins. LÄS MER
2. Creating Artificial Quantum Chiral States : Time Evolving Open Spin Chains
Kandidat-uppsats, Uppsala universitet/MaterialteoriSammanfattning : The discoveries in applications of chirality in various areas of science seem to never cease to emerge. Chirality, being the property that some objects are geometrically distinguishable from their mirror image, is a tiny difference of vast importance. LÄS MER
3. Three-body decay as a baryon polarizer
Kandidat-uppsats, Uppsala universitet/KärnfysikSammanfattning : According to the standard model, the size of CP violation in the weak decay Λ → pπ- is predicted to be ∼ 10-5. This means that a very high precision is needed if we want to be able to measure it. LÄS MER
4. Investigation of a newrepresentation of spin
Kandidat-uppsats, Uppsala universitet/MaterialteoriSammanfattning : The Bose-Hubbard Model, a tight binding model within solid state theory can be solved exactly using a number theoretical approach. From this approach, in the two sited Bose-Hubbard model, the hopping term in the model takes the form of a Pauli x matrix. The hopping term can be interpreted as a two energy level system or a dimer with k+1 particles. LÄS MER
5. Crosscap States in Integrable Spin Chains
Master-uppsats, KTH/FysikSammanfattning : We consider integrable boundary states in the Heisenberg model. We begin by reviewing the algebraic Bethe Ansatz as well as integrable boundary states in spin chains. Then a new class of integrable states that was introduced last year by Caetano and Komatsu is described and expanded. We call these states the crosscap states. LÄS MER