A New RSOS Restriction of the Zhiber-Mikhailov-Shabat Model and Φ(1,5)\Phi_{(1,5)} Perturbations of Nonunitary Minimal Models

The RSOS restriction of the Zhiber-Mikhailov-Shabat (ZMS) model is investigated. It is shown that in addition to the usual RSOS restriction, corresponding to $\Phi_{(1,2)}$ and $\Phi_{(2,1)}$ perturbations of minimal CFT, there is another one which yields $\Phi_{(1,5)}$ perturbations of non-unitary minimal models. The new RSOS restriction is carried out and the particular case of the minimal models ${\cal M}_{(3,10)}$, ${\cal M}_{(3,14)}$ and ${\cal M}_{(3,16)}$ is discussed in detail. In the first two cases, while the mass spectra of the two RSOS restrictions are the same, the bootstrap systems and the detailed amplitudes are different. In the third case, even the spectra of the two RSOS restrictions are different. In addition, for ${\cal M}_{(3,10)}$ an interpretation in terms of the tensor product of two copies of ${\cal M}_{(2,5)}$ is given.Comment: several typos corrected; error in (3,14) S-matrix found and corrected; the introductory section on RSOS restriction is rewritten. The exposition is changed at some points to improve clarity and reference to 'duality' is avoide

Finite temperature one-point functions in non-diagonal integrable field theories: the sine-Gordon model

We study the finite-temperature expectation values of exponential fields in the sine-Gordon model. Using finite-volume regularization, we give a low-temperature expansion of such quantities in terms of the connected diagonal matrix elements, for which we provide explicit formulas. For special values of the exponent, computations by other methods are available and used to validate our findings. Our results can also be interpreted as a further support for a previous conjecture about the connection between finite- and infinite-volume form factors valid up to terms exponentially decaying in the volume.Comment: 24 pages, 15 figure

Aegyptio-Afroasiatica VIII

The present paper represents the eighth part of a series of contributions to com­ parative Afroasiatic lexicology primarily from the viewpoint of Egyptian. This series is the first fruit of the work on a newly begun greater project for the Comparative-Etymo­ logical Vocabulary of Egyptian pursued by the author at the Egyptological Department of Eotvos Lorand University, Budapest, Hungary.Aegyptio-afroasiatica VIII. Sestavek je prispevek k primerjalnemu afroazijskemu (hamito-semitskemu) slovaroslovju. Predlaga nove etimologije za sedem staroegipčanskih besed, ki doslej niso imele prepoznavnih afroazijskih sorodnikov. To so: egipčansko k3-mnh 'želva', b'h 'zaničevan (pravzaprav 'smrdeč'), nkt 'neki, malo, nekaj', g3p 'sprožiti okužbo', mtj 'nadzornik, preddelavec', *mt- 'oster, zašiljen predmet', *df3- 'pitana raca'. Sestavek sodi v niz besedil o novih egipčansko-afroazijskih slovarskih ustreznostih, ki so bile ugotovljene med izdelovanjem načrtovanega Etimološkega slovarja egipčanskega jezika (prvi del z besedami na b, p, f, m izide v letu 1997)

Chiral entanglement in massive quantum field theories in 1+1 dimensions

We determine both analytically and numerically the entanglement between chiral degrees of freedom in the ground state of massive perturbations of 1+1 dimensional conformal field theories quantised on a cylinder. Analytic predictions are obtained from a variational Ansatz for the ground state in terms of smeared conformal boundary states recently proposed by J. Cardy, which is validated by numerical results from the Truncated Conformal Space Approach. We also extend the scope of the Ansatz by resolving ground state degeneracies exploiting the operator product expansion. The chiral entanglement entropy is computed both analytically and numerically as a function of the volume. The excellent agreement between the analytic and numerical results provides further validation for Cardy's Ansatz. The chiral entanglement entropy contains a universal $O(1)$ term $\gamma$ for which an exact analytic result is obtained, and which can distinguish energetically degenerate ground states of gapped systems in 1+1 dimensions.Comment: version 2, references added, minor changes, 31 pages, 12 figures, 6 table

The Importance and Role of Trust in Agricultural Co-operation – Some Empirical Experiences from Hungary

This paper examines the relations of trust in agricultural cooperation from two aspects. On the one hand, it gives a short review of relevant literature, with special regard to agri-food economy. On the other hand, it uses the results of empirical survey for the analysis of trust in machinery sharing arrangements of Hungarian agricultural producers. In connection with this, the trust is examined in two dimensions: contractual and competence trust. Our results prove that there is a positive correlation between the level of trust and the farmers’ activity in cooperative agreements. It could also be proved that the trust need is very different in the different fields of cooperation. It is a tendency that the contractual trust is more important in more intensive, higher-dependence cooperation activities, while competence trust becomes into the foreground in the more extensive solutions.Agribusiness,

Farm Inputs and Agri-Environment Measures as Indicators of Agri-Environment Quality in Hungary

The paper deals with agri-environmental indicators, examines farm inputs, on the basis of statistical data of the Organisation for Economic Co-operation and Development (OECD) (Szabo, Pomazi 2002) and the Eurostat (2004). The examined indicators are placed in the agricultural DPSIR model. The paper presents how the use of farm inputs changed in Hungary from 1980-2000. Farm inputs are related to the inputs of the EU-15, the study demonstrates that today they are below the EU- 15 average. Area under agri-environmental measures in 2003 - which covered the 4% of agricultural area of Hungary - as a response indicator is also presented and based in the land-use zone system developed by Godollo Agricultural University (Angyan et al., 1998).agri-environmental measures, farm inputs, indicators, Environmental Economics and Policy, Q01,

NLIE for hole excited states in the sine-Gordon model with two boundaries

We derive a nonlinear integral equation (NLIE) for some bulk excited states of the sine-Gordon model on a finite interval with general integrable boundary interactions, including boundary terms proportional to the first time derivative of the field. We use this NLIE to compute numerically the dimensions of these states as a function of scale, and check the UV and IR limits analytically. We also find further support for the ground-state NLIE by comparison with boundary conformal perturbation theory (BCPT), boundary truncated conformal space approach (BTCSA) and the boundary analogue of the Luscher formula.Comment: 31 pages, LaTeX; graphicx, epstopdf, 4 figure

Note on the name of king Narmer

The name of Narmer (n'r-mr), king of Upper Egypt in the late predynastic period (ab. 3000 B. C.), has remained a mystery for long millennia. The first component of the name is clearly identical with n'r "Weis (catfish)" (OK, Med., Gr., Wb II 209, 2-6). But the second element -mr has so far been lacking a reliable and convincing etymological explanation on the Egyptian lexical material. In this brief paper we attempt to give a solution for the second component of the name in the Common Afrasian (Semito-Hamitic) lexical material. First, we can also admit that the Egyptian vocabulary does not help too much to clarify -mr, as there is no Egyptian word to fit in the name

Out-of-horizon correlations following a quench in a relativistic quantum field theory

One of the manifestations of relativistic invariance in non-equilibrium quantum field theory is the "horizon effect" a.k.a. light-cone spreading of correlations: starting from an initially short-range correlated state, measurements of two observers at distant space-time points are expected to remain independent until their past light-cones overlap. Surprisingly, we find that in the presence of topological excitations correlations can develop outside of horizon and indeed even between infinitely distant points. We demonstrate this effect for a wide class of global quantum quenches to the sine-Gordon model. We point out that besides the maximum velocity bound implied by relativistic invariance, clustering of initial correlations is required to establish the "horizon effect". We show that quenches in the sine-Gordon model have an interesting property: despite the fact that the initial states have exponentially decaying correlations and cluster in terms of the bosonic fields, they violate the clustering condition for the soliton fields, which is argued to be related to the non-trivial field topology. The nonlinear dynamics governed by the solitons makes the clustering violation manifest also in correlations of the local bosonic fields after the quench.Comment: 19+14 pages, 8 figures, pdflatex, v2: presentation substantially improved, new details concerning the effect are added, v3: reformatted version, references added, results and essential conclusions unchanged, with title update