Both vibrational-excitation-induced (by (N)IR laser) and spontaneous H atom tunneling) conformational changes are often investigated by matrix-isolation spectroscopy. It is well known that rigid hosts, such as solid noble gases, N2, or normal-H2, can largely affect both the quantum efficiency of photon-induced process tunneling rate. In present study, formic acetic acids, glycine, were in a sof...

With the increasing intensity of underground development, planned metro lines will inevitably pass through water-rich soft stratum. The existing research results show that shield tunneling in stratum is prone to ground settlement and segment cracking due large moisture content low soil strength, which pose risks safety construction. prediction deformation characteristics influencing ranges caus...

We extend the correlated electron model of Baskaran [Mod. Phys. Lett. B5, 643(1991)] to the case of coupled layers. We show that the nature of the non-Fermi liquid ground state leads to the absence of electron-like quasiparticles at the Fermi surface, thereby suppressing coherent transport of electrons between the coupled layers (“confinement”). On the other hand, motion of singlet pairs betwee...

Phase transitions in a quasi-one-dimensional surface system on a metal substrate are investigated as a function of temperature. Upon cooling the system shows a loss of long-range order, fluctuations, and a transition into an inhomogeneous ground state due to competition of local adsorbate-adsorbate interactions with an incommensurate charge density wave. This agrees with a general phase diagram...

S: A series of centrifuge model tests were performed to assess the tunneling-induced ground deformations and their detrimental effects on the neighboring single pile in the saturated sandy ground. The relative elevations between the pile tip and the buried depth of new driven tunnel dominated the distributions of bending moment and axial force along the depths. A load transfer mechanism is prop...

A new approach known as flat histogram method is used to study the ±J Ising spin glass in two dimensions. Temperature dependence of the energy, the entropy, and other physical quantities can be easily calculated and we give the results for the zero-temperature limit. For the ground-state energy and entropy of an infinite system size, we estimate e0 = −1.4007± 0.0085 and s0 = 0.0709± 0.006, resp...

As mining and civil tunneling progresses to depth, excavation-induced seismicity and rockburst problems increase and cannot be prevented. As an important line of defense, ground control measures and burst-resistant rock support are used to prevent or minimize damage to excavations and thus to enhance workplace safety. Rock support in burst-prone ground differs from conventional rock support whe...

We analyze the interference between tunneling paths that occurs for a spin system with both fourth-order and second-order transverse anisotropy. Using an instanton approach, we find that as the strength of the second-order transverse anisotropy is increased, the tunnel splitting is modulated, with zeros occurring periodically. This effect results from the interference of four tunneling paths co...

The stability of structures microfabricated in soft elastomeric polymers is an important concern in most applications that use these structures. Although relevant for several applications, the collapse to the ground of high aspect ratio structures (ground collapse) is still poorly understood. The stability of soft microfabricated high aspect ratio structures versus ground collapse was experimen...