Large-scale magnetic fields from inflation due to a CPTCPT-even Chern-Simons-like term with Kalb-Ramond and scalar fields

We investigate the generation of large-scale magnetic fields due to the breaking of the conformal invariance in the electromagnetic field through the $CPT$-even dimension-six Chern-Simons-like effective interaction with a fermion current by taking account of the dynamical Kalb-Ramond and scalar fields in inflationary cosmology. It is explicitly demonstrated that the magnetic fields on 1Mpc scale with the field strength of $\sim 10^{-9}$G at the present time can be induced.Comment: 18 pages, 6 figures, version accepted for publication in Eur. Phys. J.

Kinship and social organization in Copper Age Europe. A cross-disciplinary analysis of archaeology, DNA, isotopes, and anthropology from two Bell Beaker cemeteries

Descriptive and Comparative Linguistic

Repeating boundaries – repertoires of landscape regulations in southern Scandinavia in the Late Bronze Age and Pre-Roman Iron Age

Towards the end of the Late Bronze Age, linear boundaries such as enclosed farmsteads, field divisions, and pit zone alignments emerged and gradually permeated the landscapes of southern Scandinavia on multiple scales. This article suggests the concept of a ‘repertoire’ as a way of approaching this phenomenon. The repertoire consisted of different topological operations (e.g. plot definition, demarcation, and enclosure), constructed by different materials (e.g. fences, pit zones, and earthen banks) on different scales (e.g. farmstead, settlement, and landscape). Such linear boundaries were applied as technological solutions to the new social and economic problems that occurred at this time in prehistory. A number of chronological and regional preferences can be demonstrated within this repertoire, and during the Late Bronze Age and Pre-Roman Iron Age, a range of new applications and combinations were developed in a creative exploration of the repertoire of linear boundaries