The well-known and general ‘‘compressibility theorem’’ for pure substances relates kT 52(] ln V/]p)N,T to a spatial integral involving the pair correlation function g . The isochoric inherent structure formalism for condensed phases separates g (2) into two fundamentally distinct contributions: a generally anharmonic vibrational part, and a structural relaxation part. Only the former determines...

Hugoniot data were obtained for fluid He in the 100 GPa pressure range by shock compression of samples statically precompressed in diamond-anvil cells. The initial (precompressed) He density (rho_(1)) for each experiment was tuned to a value between rho_(0L)<rho_(1)<3.3rho_(0L), where rho_(0L) is the zero-pressure density of the cryogenic liquid (rho_(0L)=0.123 g/cm(3)). The maximum observed sh...

Electron interactions reinforce minigaps induced in metallic nanotubes by an external field and turn the gap field dependence into a universal power law. An exactly solvable Gross-Neveau model with an SU(4) symmetry is derived for neutral excitations near half filling. Charge excitations, described by a sine-Gordon perturbation of Luttinger liquid theory, are composite solitons formed by the ch...

Using a coarse-grained molecular model we study the spatial distribution of lipid domains on a 20-nm-sized vesicle. The lipid mixture laterally phase separates into a raftlike, liquid-ordered (l(o)) phase and a liquid-disordered phase. As we uniaxially compress the mixed vesicle keeping the enclosed volume constant, we impart tension onto the membrane. The vesicle adopts a barrel shape, which i...

Diatoms are microscopic algae with a skeleton called frustule, formed chiefly of silica, and found in almost all aquatic environments climatic conditions. Diatomaceous soils (DSs) originate from frustule sedimentation. In civil works (design construction), the uncommon values obtained DSs not completely understood. There needs to be more knowledge about strength compressibility DSs. The stabili...

By means of a Quadratic Diffusion Monte Carlo method we have performed a comparative analysis between the Aziz potential and a revised version of it. The results demonstrate that the new potential produces a better description of the equation of state for liquid He. In spite of the improvement in the description of derivative magnitudes of the energy, as the pressure or the compressibility, the...

We demonstrate that for gapped bilayer graphene, the nonlinear nature of the screening of an external disorder potential and the resulting inhomogeneity of the electron liquid are crucial for describing the electronic compressibility. In particular, traditional diagrammatic methods of many-body theory do not include this inhomogeneity and therefore fail to reproduce experimental data accurately...

Water is unique in its number of unusual, often called anomalous, properties. When hot it is a normal simple liquid; however, close to ambient temperatures properties, such as the compressibility, begin to deviate and do so increasingly on further cooling. Clearly, these emerging properties are connected to its ability to form up to four well-defined hydrogen bonds allowing for different local ...

Thermoviscoelastic linear-response functions are calculated from the master equation describing viscous liquid inherent dynamics. From the imaginary parts of the frequency-dependent isobaric specific heat, isothermal compressibility, and isobaric thermal expansion coefficient, we define a "linear dynamic Prigogine-Defay ratio" LambdaTp(omega) with the property that if LambdaTp(omega)=1 at one f...

We have investigated the doping dependencies of the basal areas in single-layer high-Tc cuprates La2−xSrxCuO4 and HgBa2CuOx, as well as in two-layer Y1−yCayBa2Cu3Ox and HgBa2CaCu2Ox. The basal areas not only tend to shrink on hole doping, as expected from single electron quantum chemistry, but exhibit also a “bulge” around optimum doping. We attribute the “bulge” to the effects of the strongly ...