Sökning: "pair potential"

Visar resultat 1 - 5 av 168 avhandlingar innehållade orden pair potential.

  1. 1. Phase Transformations in Computer Simulated Icosahedrally Ordered Phases

    Författare :Fredrik Zetterling; KTH; []
    Nyckelord :simpl liquids; molecular dynamics; pair potential; icosahedral custer;

    Sammanfattning : Computer simulations play a profound and fundamental role inmodern theoretical physics, chemistry and materials science. Tounderstand the complex physics of metally liquids, metals,quasicrystals and metally glasses a working model imposing thelocal and global order is needed. LÄS MER

  3. 2. Determination of separation coordinates for potential and quasi-potential Newton systems

    Författare :Claes Waksjö; Sergio Benenti; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS; MATEMATIK;

    Sammanfattning : When solving Newton systems q = M(q), q ϵ Rn, by the method of separation of variables, one has to determine coordinates in which the related Hamilton-Jacobi equation separates.The problem of finding separation coordinates for potential Newton systems q = -∇V (q) goes back ta Jacobi. LÄS MER

  4. 3. Quantum Coherence in the Single Cooper Pair Box

    Författare :Kevin Bladh; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; coherent oscillations; single Cooper pair box; quantum coherence; radio frequency single electron transistor; cryogenic filters;

    Sammanfattning : This thesis presents measurements of quantum coherence in a single Cooper pair box, where quantum oscillations of charge between a reservoir and a small superconducting island have been observed. The single Cooper pair box (SCB) consists of a small metallic island which is connected to a reservoir via a tunnel junction. LÄS MER

  5. 4. Infidelity in Birds – Causes and Consequences of Extra-pair Paternity

    Författare :Jakob Augustin; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; extra-pair paternity; genetic benefits; heterozygosity; sex ratio; Riparia riparia; Tringa totanus; Vanellus vanellus; Charadrius alexandrinus;

    Sammanfattning : Forty years ago, more than 90% of bird species were classified as monogamous and not very exciting systems for studies of e.g. sexual selection. LÄS MER

  7. 5. Molecular Motion in Frustrated Lewis Pair Chemistry: insights from modelling

    Författare :Maoping Pu; Timofei Privalov; Todd Martinez; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; CO2 capture; hydrogen activation; molecular motion; ab initio molecular dynamics; frustrated Lewis pair; quantum chemical modelling; reaction mechanism; Organic Chemistry; organisk kemi;

    Sammanfattning : Mechanisms of reactions of the frustrated Lewis pairs (FLPs) with carbon dioxide (CO2) and hydrogen (H2) are studied by using quantum chemical modelling. FLPs are relatively novel chemical systems in which steric effects prevent a Lewis base (LB) from donating its electron pair to a Lewis acid (LA). LÄS MER