We use the image sum method to reproduce Sushkov’s result that for a massless automorphic field on the initial globally hyperbolic region IGH of Misner space, one can always find a special value of the automorphic parameter α such that the renormalized expectation value 〈α|Tab|α〉 in the Sushkov state “〈α| · |α〉” (i.e. the automorphic generalization of the Hiscock-Konkowski state) vanishes. Howe...

This study evaluates the accuracy of U/Th dates for young (6 a few thousand years old) reef corals, both living and fossil, and explores strategies for refining those dates. The high precision of the U/Th method (0 1^2%) for dating young corals is well-established. Earlier studies have demonstrated the method’s accuracy for select samples of known age. However, these studies have focused on typ...

Currently, incomparable dating systems are used in archaeology, based on historical chronology, dendrochronology, and two types of radiocarbon dates: LSC AMS. But the latter suggest, as a rule, earlier dates. Contrary to this, intervals chronology dendrochronology quite comparable. And obtained by means Bayesian statistics AMS dates very close. The problem is also aggravated fact that use stand...

A video of an interactive application for exploring our space-time cuboids is available at In this video, we explore each of our three datasets and move forward and backward in time to highlight the dynamic content found in each. Our system makes use of a modified version of PMVS2 in order to compute the initial dense 3D reconstruction that we segment. While two patches occupying the same 3D sp...

In this brief report I introduce a yet another class of geometries for which semi-classical chronology protection theorems are of dubious physical reliability. I consider a “Roman ring” of traversable wormholes, wherein a number of wormholes are arranged in a ring in such a manner that no subset of wormholes is near to chronology violation, though the combined system can be arbitrarily close to...

[1] A rock magnetic cyclostratigraphy, based on anhysteretic remanent magnetization (ARM) intensity variations, was developed for the Eocene Arguis Formation in the Spanish Pyrenees. The Arguis Formation was sampled for ARM cyclostratigraphy, rock magnetic, and paleomagnetic analyses. Rock magnetic measurements indicate that the dominant magnetic mineral controlling the ARM cyclostratigraphy is...

By the early twentieth century there was a growing need within palaeoanthropology and prehistoric archaeology to find a way of dating fossils and artefacts in order to know the age of specific specimens, but more importantly to establish an absolute chronology for human prehistory. The radiocarbon and potassium-argon dating methods revolutionized palaeoanthropology during the last half of the t...

Abstract This study is first attempt to refine Early Iron Age absolute chronology, specifically the timing of Hallstatt C-D transition in southern Germany, using Bayesian chronological modelling radiocarbon ( 14 C) dates. The period (c.800–450 BC) marks from prehistory proto-history Central Europe. relative framework for burials developed by mid-twentieth century still used today, but dating li...