Sökning: "spinnkedjor"
Hittade 5 uppsatser innehållade ordet spinnkedjor.
1. 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
2. Integrability of super spin chains in 6D N=(1,0) SCFTs
Kandidat-uppsats, Uppsala universitet/Teoretisk fysikSammanfattning : Superconformal field theories (SCFTs) are an important class of quantum field theories. These SCFTs have been a significant component in exploring and comprehending the fundamental framework of quantum field theories. LÄS MER
3. 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
4. Exact eigenstates of the Inozemtsev spin chain
Master-uppsats, KTH/FysikSammanfattning : This thesis deals with the following question: are there more eigenfunctions, other than the already known eigenfunctions, of the spin chain with elliptic interactions known as the Inozemtsev spin chain? The Inozemtsev spin chain interpolates between two quantum integrable spin chains, theHeisenberg spin chain and the Haldane-Shastry spin chain. Therefore it is interesting to explore eigenfunctions of the Inozemtsev spin chain in greater detail. LÄS MER
5. Phase Diagrams of Finite Spin Chains with Coupled Spin and Lattice Vibrations
Kandidat-uppsats, Uppsala universitet/MaterialteoriSammanfattning : The spin-lattice coupling is due to itinerant electrons interacting with both spins of ions and phonons, mediating a coupling between magnetic spin moments and lattice vibrations. In this project, the coupling is studied systematically for finite quantum spin chains of size 2 – 10. LÄS MER