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Automorphisms of solenoids and p-adic entropy (1988)
Journal Article
Lind, D., & Ward, T. (1988). Automorphisms of solenoids and p-adic entropy. Ergodic Theory and Dynamical Systems, 8(3), 411-419. https://doi.org/10.1017/s0143385700004545

We show that a full solenoid is locally the product of a euclidean component and p-adic components for each rational prime p. An automorphism of a solenoid preserves these components, and its topological entropy is shown to be the sum of the euclidea... Read More about Automorphisms of solenoids and p-adic entropy.

Energetic constraints on spectral distortions of the microwave background (1988)
Journal Article
Lacey, C. G., & Field, G. B. (1988). Energetic constraints on spectral distortions of the microwave background. Astrophysical Journal, 330(7), L1-L4. https://doi.org/10.1086/185191

The energetic constraints on mechanisms for producing the spectral distortion of the microwave background claimed by Matsumoto et al., (1988) are investigated in the light of the new upper bounds on the cosmological baryon density derived by Kawano e... Read More about Energetic constraints on spectral distortions of the microwave background.

The structure of shocks with thermal conduction and radiative cooling (1988)
Journal Article
Lacey, C. G. (1988). The structure of shocks with thermal conduction and radiative cooling. Astrophysical Journal, 326, 769-778. https://doi.org/10.1086/166136

A general analysis is presented of the structure of a steady state, plane-parallel shock wave in which both thermal conduction and radiative cooling are important. The fluid is assumed to have a perfect-gas equation of state, with radiative cooling a... Read More about The structure of shocks with thermal conduction and radiative cooling.

Solutions of Minkowskian $\sigma$ Models on Hyperbolic Complex Grassmann Manifolds. (1988)
Journal Article
Lambert, D., & Piette, B. (1988). Solutions of Minkowskian $\sigma$ Models on Hyperbolic Complex Grassmann Manifolds. Classical and Quantum Gravity, 5(2), 307-319. https://doi.org/10.1088/0264-9381/5/2/010

The authors define two-dimensional Minkowskian sigma models valued in hyperbolic complex Grassmann manifolds. They construct a different kind of solution using hyperbolic analytic functions. They exhibit graphs of a few explicit solutions.

The diffusion of stars through phase space (1988)
Journal Article
Binney, J., & Lacey, C. (1988). The diffusion of stars through phase space. Monthly Notices of the Royal Astronomical Society, 230(4), 597-627. https://doi.org/10.1093/mnras/230.4.597

Deviations of the potentials of stellar systems from integrability cause stars to diffuse through three-dimensional orbit space. The Fokker–Planck equation that describes this diffusion takes a particularly simple form when actions are used as orbit-... Read More about The diffusion of stars through phase space.