Phase-amplitude coupling (PAC) describes the phenomenon where power of a high-frequency oscillation evolves with phase low-frequency one. We propose model that explains emergence PAC in two commonly-accepted architectures brain, namely, neural driven by an external input and interacting local oscillations distinct, locally-generated frequencies. further interconnection structure for brain regio...

Phase noise in mutually synchronized oscillator systems is analyzed for arbitrary coupling and injection-locking topologies, neglecting amplitude noise, and amplitude modulation (AM) to phase modulation (PM) conversion. When the coupling phase is chosen properly (depending on the oscillator model), the near-carrier phase noise is reduced to 1=N that of a single oscillator, provided the coupling...

The existence of a second Higgs doublet in Nature could lead to a cosmological first order electroweak phase transition and explain the origin of the matter-antimatter asymmetry in the Universe. We explore the parameter space of such a two-Higgs-doubletmodel and show that a first order electroweak phase transition strongly correlates with a significant uplifting of the Higgs vacuum w.r.t. its S...

The success of models of coupled two-leg spin ladders in describing the magnetic excitation spectrum of La2−xBaxCuO4 had been interpreted previously as evidence for bond-centered stripes. In a recent article, however, we determined the magnetic coupling induced by the charge stripes between bondor site-centered spin stripes modeled by twoor three-leg ladders, respectively. We found that only th...

We have modeled magneto-dielectric phase transitions in ABX3-type layered triangular lattice compounds. The model consists of a spin system (magnetic transition) and a lattice system (dielectric transition). Magnetic exchange interactions are supposed to change with a relative position between two spins. This assumption produces an effective coupling between the lattice and the spin. Applying t...