The Corinth Rift in Central Greece has been studied extensively during the past decades, as it is one of the most seismically active regions in Europe. It is characterized by normal faulting and extension rates between 6 and 15 mm yr−1 in an approximately N10E◦ direction. On 2013 May 21, an earthquake swarm was initiated with a series of small events 4 km southeast of Aigion city. I…

There has been a proposal that infrared quantum effects of massless interacting field theories in de Sitter space may provide time-dependent screening of the cosmological constant. As a concrete model of the proposal, we study the three loop corrections to the energy–momentum tensor of massless λφ4 theory in the background of classical Liouville gravity in D = 2 dimensional de Sitt…

The Okavango Delta of northern Botswana is one of the world’s largest inland deltas or megafans. To obtain information on the character of sediments and basement depths, audio magnetotelluric (AMT), controlled-source audiomagnetotelluric (CSAMT) and central-loop transient electromagnetic (TEM) data were collected on the largest island within the delta. The data were inverted individually and …

We study Q-ball dark matter in gauge-mediated supersymmetry breaking, and seek the possibility of detection in the IceCube experiment. We find that the Q balls would be the dark matter in the parameter region different from that for gravitino dark matter. In particular, the Q ball is a good dark matter candidate for low reheating temperature, which may be suitable for the Affleck–Dine baryog…

We investigate the Higgs inflation and the Higgs portal dark matter with the right-handed neutrino. The dark matter and the right-handed neutrino in the Higgs inflation play important roles in explaining the recent experimental results of the Higgs and top masses, and the cosmic microwave background by BICEP2 at the same time. This inflation model predicts 805 GeV  mDM  1220 GeV for the DM m…

We present an argument to support the existence of dissipativemodes in relativistic field theories. For an O(N) ϕ4 theory in spatial dimension 1 ≤ d ≤ 3, the two-point function of ϕ is shown to develop a pole of the form p0 ∼ i −1(p2 + m2) at small energy p0 and momentum p, with a nonzero finite coefficient or relaxation constant, ,when evaluated in the two-…

The solution of the geophysical electromagnetic (EM) modelling problem on unstructured tetrahedral-Vorono¨ı grids using EM potentials is investigated. Unstructured grids enable accurate representation of geological structures and interfaces and allow local refinements that can be beneficial in the mesh, for example, at the observation points and at the source. The time-harmonic Helmholtz…

The scattering of seismic waves travelling in the Earth is not only caused by random velocity heterogeneity but also by surface topography. Both factors are known to strongly affect groundmotion complexity even at relatively short distance from the source. In this study, we simulate ground motion with a 3-D finite-difference wave propagation solver in the 0–5 Hz frequency band using three to…

We investigate spatio temporal variations of the crustal stress field orientation along the rupture zones of the 1999 August Izmit Mw 7.4 and November D¨uzce Mw 7.1 earthquakes at the North Anatolian Fault zone (NAFZ) in NW Turkey. Our primary focus is to elaborate on the relation between the state of the crustal stress field and distinct seismotectonic features as well as variations of cosei…

In this letter, we study the latest bound on the mass of doubly charged Higgs bosons, H±±, assuming that they dominantly decay into a diboson. The new bound is obtained by comparing the inclusive searches by the ATLAS Collaboration [ATLAS Collaboration, J. High Energy Phys. 1503, 041 (2015)] for events with a same-sign dilepton using the latest 20.3 fb−1 data at the Large Hadron Collide…