Essays about: "orbital angular momentum"

Showing result 1 - 5 of 13 essays containing the words orbital angular momentum.

1. 1. Electronic states in semiconductor double quantum dots and quantum rings - Theory and tight-binding modeling

   University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

   Author : Calle Stenberg; [2021]
   Keywords : double quantum dots quantum rings tight-binding aharonov-bohm g-factor enhancement InAs; Physics and Astronomy;

   Abstract : In recent experiments on semiconductor nanowires and quantum dots, enhanced g-factors up to several times the bulk value have been measured [1] [2]. The enhancement is attributed to orbital contributions g∗orb to the effective g-factor g∗ = g∗spin+g∗orb from the coupling of the high angular momentum ring-like states to the magnetic field. READ MORE

3. 2. Stars Eating Planets

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : John Wimarsson; [2020]
   Keywords : Earth and planetary astrophysics; planetary dynamics; planet-planet scattering; planet consumption; Physics and Astronomy;

   Abstract : In a phase of instability during the dynamical evolution of some multiple exoplanetary systems, exchange of angular momentum and/or energy through gravitational interactions between planets will lead to alterations of their orbital properties. In some cases, planetary orbits end up crossing, which leads to close encounters between two planets. READ MORE

4. 3. How Stellar Tides Affect Planet Evolution

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : Madison Green; [2019]
   Keywords : Physics and Astronomy;

   Abstract : Planets that orbit their host star closely experience tidal forces due to the strength of gravity not being uniform all over the planet. This leads to effects such as tidal spin synchronization, tidal eccentricity damping and tidal semi-major axis damping. READ MORE

5. 4. The astronomical consequences of primordial black holes

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : Loke Lönnblad Ohlin; [2019]
   Keywords : Physics and Astronomy;

   Abstract : In the radiation or early matter dominated eras of the Universe, there is a theoretical possibility for the formation of black holes (BHs). These primordial black holes (PBHs) have been thought of as a possible candidate for dark matter (DM), and an attractive one at that as it would explain DM using only baryonic physics. READ MORE

6. 5. Formation and Evolution of Protoplanetary Disks

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : Johan Appelgren; [2019]
   Keywords : protoplanetary disk; protoplanetary disk formation; protoplanetary disk evolution; planet formation; Physics and Astronomy;

   Abstract : A star forms with a surrounding protoplanetary disk after the collapse of a molecular cloud core. Subsequently, over a period of several Myr this protoplanetary disk of dust and gas is accreted onto the host star. We model the formation and evolution of such a protoplanetary disk using a one-dimensional numerical model. READ MORE