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- S Gov, S Shtrikman, H Thomas
- 1999

In this paper we analyze the dynamic stability of the hovering magnetic top from first principles without using any preliminary assumptions. We write down the equations of motion for all six degrees of freedom and solve them analytically around the equilibrium solution. Using this solution we then find conditions which the height of the hovering top above… (More)

- P Flanders, S Gov, S Shtrikman, H Thomas
- 2008

In this paper we analyze the spinning motion of the hovering magnetic top. We have observed that its motion looks different from that of a classical top. A classical top rotates about its own axis which pre-cesses around a vertical fixed external axis. The hovering magnetic top, on the other hand, has its axis slightly tilted and moves rigidly 1 as a whole… (More)

- S Gov, S Shtrikman, H Thomas
- 1998

We study, both classically and quantum-mechanically, the problem of a neutral particle with a spin S, mass m and magnetic moment µ, moving in one dimension in an inhomogeneous magnetic field given by B = B 0 ˆ z+B ′ ⊥ xˆy. This problem serves for us as a toy model to study the trapping of neutral particles. We identify K ≡ S 2 (B ′ ⊥) 2 µmB 3 0 , which is… (More)

- S Gov, S Shtrikman, H Thomas
- 1999

Recently, we developed a method for calculating the lifetime of the particle in the special situation where there is no potential barrier, as a first step in our efforts to understand the quantum-mechanics of magnetic traps. The toy model that was used in this study was physically unrealistic because the magnetic field did not obey Laplace's equation. Here,… (More)

- Dirk Grupe, Karen M. Leighly, Hans-Christoph Thomas, Sally A. Laurent-Muehleisen
- 2000

We report the discovery and analysis of the follow-up ROSAT pointed observation, an ASCA observation and optical and radio observations of the enigmatic Narrow-Line Seyfert 1 galaxy RX J0134.2–4258. While its spectrum was one of the softest observed from an AGN during the ROSAT All-Sky Survey, its spectrum was found to be dramatically harder during a… (More)

- S Gov, S Shtrikman, H Thomas
- 1998

We study, both classically and quantum-mechanically, the problem of a neutral particle with spin S, mass m and magnetic moment µ, moving in two-dimensions in an inhomogeneous magnetic field given by B = B ′ ⊥ (xˆx − yˆy) + B 0 ˆ z. We identify K ≡ S 2 (B ′ ⊥) 2 µmB 3 0 , which is the ratio between the precessional frequency of the particle and its vibration… (More)

- H Thomas
- The American journal of psychology
- 1968

- H F Thomas
- The British journal of ophthalmology
- 1996

- P H~inggi, H Thomas
- 1976

We investigate the time evolution of stochastic non-Markov processes as they occur in the coarse-grained description of open and closed systems. We show that semigroups of propagators exist for all multivariate probability distributions, the generators of which yield a set of time-convolutionless master equations. We discuss the calculation of averages and… (More)

- S Gov, S Shtrikman, H Thomas
- 1999

Recently, we developed a method for calculating the lifetime of a particle inside a magnetic trap with respect to spin flips, as a first step in our efforts to understand the quantum-mechanics of magnetic traps. The 1D toy model that was used in this study was physically unrealis-tic because the magnetic field was not curl-free. Here, we study, both… (More)