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My countrymen (and, unfortunately, nowadays also women) are internationally known for their furious drinking habits. If it were not so, I would not have come to know the topical area of this review so fast. My very first personal connection to VLBI which is the acronym for Very Long Baseline Interferometry was about 25 years ago. The students of my own(More)
We develope a computationally efficient extension of the Dyson Brownian Motion (DBM) algorithm to generate random function in C2 locally. We further explain that random functions generated via DBM show an unstable growth as the traversed distance increases. This feature restricts the use of such functions considerably if they are to be used to model(More)
Is the cosmological constant screened in Liouville gravity with matter? Takeo Inami1,2, Yoji Koyama3, Yu Nakayama4,∗, and Mariko Suzuki5,6 1Mathematical Physics Lab., Riken Nishina Center, Saitama 351-0198, Japan 2Department of Physics, National Taiwan University, Taipei 10617, Taiwan, R.O.C. 3Department of Physics, National Tsing-Hua University, Hsinchu(More)
A series of VLBI observations for the NOZOMI spacecraft was performed between the end of 2002 and July 2003 with aim of supporting orbit determination. We have made an astrometric analysis of the VLBI data for celestial coordinates estimation of the spacecraft with phase delay observables. Phase delay has the potential to give 3-4 orders of improvement in(More)
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(More)
Nema nijedne zemlje u tranziciji koja ima tako dugu bogatu reformsku i tržišnu tradiciju kao Hrvatska i Slovenija. To, razumije se, vrijedi i za druge zemlje nastale razdruživanjem bivše Jugoslavije. Zato se na međunarodnoj znanstvenoj i političkoj sceni očekivalo da će upravo te zemlje biti na čelu tranzicijske kolone upravo onako kao što su dugi niz(More)
  • Yoji Koyama, Claudia de Rham, +7 authors Riccardo Rattazzib
  • 2006
We argue that certain apparently consistent low-energy effective field theories described by local, Lorentz-invariant Lagrangians, secretly exhibit macroscopic non-locality and cannot be embedded in any UV theory whose S-matrix satisfies canonical analyticity constraints. The obstruction involves the signs of a set of leading irrelevant operators, which(More)
The starting point of the book is that all of the Central and Eastern European Countries (CEECs) are not newcomers to Europe, but are in fact returning to Europe. Secondly, a different path from the one they took could have led to different results, less sacrifice and pain related to shock therapy and neoliberal reforms (p. 6). What makes this book really(More)
Highly variable weather conditions, especially the rapidly changing water vapor distribution, bias the interpretation of interferometric synthetic aperture radar (InSAR) images. Any change of atmospheric condition is reflected as differential propagation delay in the InSAR images, which is difficult to distinguish from the real ground motion. Moreover, for(More)
Very long baseline interferometry (VLBI) is one of the technologies to enable comparisons of atomic frequency standards at intercontinental baseline. Our group is working on development of wideband VLBI system with transportable small diameter antennas for VLBI application to the frequency transfer. The system is composed of pair of small diameter antennas(More)
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