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An adjectival construction indicating lesser degree in Early Modern Irish
Get PDFArgues that late Middle and Early Modern Irish had a comparative/superlative construction in neamh- that could indicate lesser degree (e.g. 'less/least successful')
On stressed monosyllables ending in a short vowel in Classical Modern Irish
Get PDFArgues that a category of stressed words ending in a short vowel emerged at the end of the Middle Irish/beginning of the Early Modern Irish period
A New Synthesis of Early Medieval Brittonic History (Wales and the Britons 350–1064 by Thomas M. Charles-Edwards)
Get PDFA review article on Thomas M. Charles-Edwards, Wales and the Britons 350–1064 (Oxford, 2013)
A Computer Test of Holographic Flavour Dynamics II
Get PDFWe study the second derivative of the free energy with respect to the fundamental mass (the mass susceptibility) for the Berkooz-Douglas model as a function of temperature and at zero mass. The model is believed to be holographically dual to a D0/D4 intersection. We perform a lattice simulation of the system at finite temperature and find excellent agreement with predictions from the gravity dual
Relocation of long-period (LP) seismic events reveals en echelon fractures in the upper edifice of Turrialba volcano, Costa Rica
Get PDFSwarms of long-period (LP) events were recorded on Turrialba volcano, Costa Rica, during a seismic field experiment in 2009. Families of LP events were previously identified and located using a joint inversion for source location and mechanism; however, the spatial resolution of the obtained locations was not sufficient for imaging the structures on which they occur. Using a waveform similarity-based location
method, we take advantage of the joint location-mechanism inversion by relocating events around the obtained familial location. The location method is successfully tested on a synthetic data set and is then applied to the Turrialba LP data set. The relocated events are jointly interpreted with their source mechanisms and reveal an en echelon structure within the upper edifice of the volcano. This can be interpreted as a response of a shearing band with high fluid pressure inducing tensile fractures at unconsolidated rock layer interfaces within the upper edifice of the volcano
Twin supergravities from Yang-Mills theory squared
Get PDFWe consider ‘twin supergravities’ - pairs of supergravities with N+ and N_ supersymmetries, N+ > N_ , with identical bosonic sectors - in the context of tensoring super Yang-Mills multiplets. It is demonstrated that the pairs of twin supergravity theories are related through their left and right super Yang-Mills factors. This procedure generates new theories from old. In particular, the matter coupled N_ twins in D = 3, 5, 6 and the N_ = 1 twins in D = 4 have not, as far as we are aware, been obtained previously using the double-copy construction, adding to the growing list of double-copy constructible theories. The use of fundamental matter multiplets in the double-copy construction leads us to introduce a bi-fundamental scalar that couples to the well-known bi-adjoint scalar field. It is also shown that certain matter coupled supergravities admit more than one factorisation into left and right super Yang-Mills-matter theories
Dimer geometry, amoebae and a vortex dimer model
Get PDFWe present a geometrical approach for studying dimers. We introduce a connection for dimer problems on bipartite and non-bipartite graphs. In the bipartite case the connection is flat but has non-trivial Z_2 holonomy round certain curves. This holonomy has the universality property that it does not change as the number of vertices in the fundamental domain of the graph is increased. It is argued that the K-theory of the torus, with or without punctures, is the appropriate underlying invariant. In the non-bipartite case the connection has non-zero curvature as well as non-zero Chern number. The curvature does not require the introduction of a magnetic field. The phase diagram of these models is captured by what is known as an amoeba. We introduce a dimer model with negative edge weights that give rise to vortices. The amoebae for various models are studied with particular emphasis on the case of negative edge weights which corresponds to the presence of vortices. Vortices gives rise to new kinds of amoebae with certain singular structures which we investigate. On the amoeba of the vortex full hexagonal lattice we find the partition function corresponds to that of a massless Dirac doublet
On the Line-break in Early Irish Verse, and Some Remarks on the Syntax of the Genitive in Old and Middle Irish
Get PDFThe strong converse theorem for the product-state capacity of quantum channels with ergodic Markovian memory
Get PDFEstablishing the strong converse theorem for a communication channel confirms that the capacity of that channel, that is, the maximum achievable rate of reliable information communication, is the ultimate limit of communication over that channel. Indeed, the strong converse theorem for a channel states that coding at a rate above the capacity of the channel results in the convergence of the error to its maximum value 1 and that there is no trade-off between communication rate and decoding error. Here we prove that the strong converse theorem holds for the product-state capacity of quantum channels with ergodic Markovian correlated memory