Phase diagram of random lattice gases in the annealed limit

An analysis of the random lattice gas in the annealed limit is presented. The statistical mechanics of disordered lattice systems is briefly reviewed. For the case of the lattice gas with an arbitrary uniform interaction potential and random short-range interactions the annealed limit is discussed in detail. By identifying and extracting an entropy of mixing term, a correct physical expression for the pressure is explicitly given. As an application, the one-dimensional lattice gas with uniform long-range interactions and random short-range interactions satisfying a bimodal annealed probability distribution is discussed. The model is exactly solved and is shown to present interesting behavior in the presence of competition between interactions, such as the presence of three phase transitions at constant temperature and the occurrence of triple and quadruple points.Comment: Final version to be published in the Journal of Chemical Physic

Experts and creativity in programming

This research aims to explore the intricate relationships between creativity and programming, encouraging programmers to embrace a more creative approach to their work. It is based on answering the question, “How do experts perceive creativity in programming”. There is not much research in the area of creativity and programming, and this work bridges the gap between academia and my community of practice. In order to have a better understanding of the role of creativity in programming, I conducted a qualitative cross-sectional study where I collected information from sixteen expert programmers using semi-structured interviews. The transcripts produced 163,806 words leading to the interpretation of participants’ experiences using Applied Thematic Analysis (ATA). Initially, I produced 164 codes organized into sub-themes, originating seven main themes analysed in their relationship with creativity in programming: creativity, programming code, expertise, innovation, learning and development and impact. This study identified the participants’ perception of creativity in programming code and inferred that creativity is one of the characteristics that software developers can have that becomes a competitive advantage for modern organizations. In general, this research aims to contribute to the development of creativity in the field of programming and offer practical insights and recommendations to promote creativity, innovation, and excellence in the practice of software development

Bootstrapping QCD: the Lake, the Peninsula and the Kink

We consider the S-matrix bootstrap of four dimensional scattering amplitudes with $O(3)$ symmetry and no bound-states. We explore the allowed space of scattering lengths which parametrize the interaction strength at threshold of the various scattering channels. Next we consider an application of this formalism to pion physics. A signature of pions is that they are derivatively coupled leading to (chiral) zeros in their scattering amplitudes. In this work we explore the multi-dimensional space of chiral zeros positions, scattering length values and resonance mass values. Interestingly, we encounter lakes, peninsulas and kinks depending on which sections of this intricate multi-dimensional space we consider. We discuss the remarkable location where QCD seems to lie in these plots, based on various experimental and theoretical expectations.Comment: 6 pages, 7 figure

Comparison of 1DH and 2DH mathematical models for modelling wave hydrodynamics in Ofir beach

Coastal zone protection is a very crucial issue in order to defend populations and infrastructures as well as to environment conservation. Adequate tools must be tested and implemented for supporting engineering solutions to face this challenge. In this study, 1DH and 2DH models were applied to simulate wave hydrodynamics at Ofir beach, NW Portugal. For this purpose, COULWAVE (1DH) and BOUSS-2D (2DH) models were implemented considering both the presence of a detached breakwater and natural conditions aiming the study of the impact of these structures on the significant wave height and the wave energy. A comparison of the performance of the two models was also developed. The methodology adopted in this research work, where a generalised methodology of models applications was used, allows its replication to other coastal stretches being this application dependent on local environmental conditionsinfo:eu-repo/semantics/publishedVersio