An alternative interpretation of the quantum adiabatic approximation is presented. This interpretation is based on the ideas originally advocated by David Bohm in his quest for establishing a hidden variable alternative to quantum mechanics. It indicates that the validity of the quantum adiabatic approximation is a sufficient condition for the separability of the quantum action function in the ...

Most so-called “adiabatic” digital logic circuit families reported in the low-power design literature are actually not truly adiabatic, in that they do not satisfy the general definition of adiabatic physical processes, as ones whose energy dissipation tends towards zero as their speed and/or parasitic interactions are decreased. Yet, the need for truly adiabatic design can be proven to be a ke...

Adiabatic process in thermodynamics transfers energy across zero temperature difference. The adiabatic CMOS design style attempts to switch a transistor to transfer energy across its source and drain while the voltage difference is zero. We define an adiabatic microarchitecture that pushes instructions across zero IPC gradient. The IPC gradient can be zero across time: for the same stage IPC ov...

The dependence of some thermodynamic properties of spin-polarized liquid 3He such as velocity of sound, adiabatic index, isentropic compressibility and temperature on the spin polarization has been investigated along different isentropic paths. The Lennard-Jones potential has been used in our calculations. It has been found that for higher values of entropy, the spin polarization has greate...

Abstract The paper presents a split-level sinusoidal power supply clock generator circuit for Two-Phase Adiabatic Static CMOS Logic circuit (2PASCL). The driving of adiabatic logic requires adiabatic controlled sources of voltage. We study the clock voltage generator circuit using SPICE simulation and investigate the most suitable scheme and highest energy efficiency for the energy recovery pow...

The coupled transfer of electrons and protons is a central feature of biological and molecular catalysis, yet fundamental aspects of these reactions remain poorly understood. In this study, we extend the ring polymer molecular dynamics (RPMD) method to enable direct simulation of proton-coupled electron transfer (PCET) reactions across a wide range of physically relevant regimes. In a system-ba...

Coupling the dark matter (DM) and baryonic components in galaxies via dynamical friction (by allowing the latter to be clumpy) leads to energy input into the DM. The resulting expanding tendency in the DM component overcomes the competing effect of adiabatic contraction, resulting from the shrinking gas component, and leads to a nearly constant density core. The baryonic mass inflow also leads ...

We introduce the (general) homotopy groups of spheres as link invariants for Brunnian-type links through the investigations on the intersection subgroup of the normal closures of the meridians of strongly nonsplittable links. The homotopy groups measure the difference between the intersection subgroup and symmetric commutator subgroup of the normal closures of the meridians and give the invaria...

The adiabatic invariant nature of black hole horizon area in classical gravity suggests that in quantum theory the corresponding operator has a discrete spectrum. I here develop further an algebraic approach to black hole quantization which starts from very elementary assumptions, and proceeds by exploiting symmetry. It predicts a uniformly spaced area spectrum for all charges and angular momen...