Concept

Hamiltonian system

Publications associées (65)

Topologic study of a magnetic perturbation in a 3D free boundary plasma equilibrium

We have investigated the topological modification of an equilibrium with nested magnetic flux surfaces computed with the free boundary variational moments equilibrium code (VMEC) subject to an applied magnetic field perturbation. Magnetic field lines are t ...

1998

Mapping of a stochastic magnetic field in toroidal systems

Wilfred Anthony Cooper

The topological features of a stochastic magnetic field are investigated by the tracing of magnetic field lines. The first method consists of direct integration of the field line equations. An alternative approach is to invoke the incompressibility of the ...

1998

Energy principles for linear dissipative systems with application to resistive MHD stability

A formalism for the construction of energy principles for dissipative systems is presented. It is shown that dissipative systems satisfy a conservation law for the bilinear Hamiltonian provided the Lagrangian is time invariant. The energy on the other hand ...

1997

Classical and quantum mechanics of a chaotic hamiltonian system

We examine the correspondence between a quantum system and its classical analogue. We consider the wedge billiard which shows a wide variety of behaviors ranging from integrable to strongly chaotic. Angle-action coordinates are provided for the flow and fo ...

EPFL1995

Competing interactions in self-assembled monolayers containing peptide groups: molecular dynamics studies of long-chain perfluoro mercaptans on Au(111)

Ursula Röthlisberger

The structure of self-assembled monolayers of a long-chain perfluoro mercaptan was studied by using mol. dynamics simulations. The particular system studied (e.g., perfluorooctyl mercaptoethylamide) was chosen because it offers the possibility of generatin ...

1994

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