منابع مشابه
Chemical Potential ∗
We show how to include a chemical potential µ in perfect lattice actions. It turns out that the standard procedure of multiplying the quark fields Ψ, ¯ Ψ at Euclidean time t by exp(±µt), respectively, is perfect. As an example, the case of free fermions with chemical potential is worked out explicitly. Even after truncation, cutoff effects in the pressure and the baryon density are small. Using...
متن کاملThe elusive chemical potential
This paper offers some qualitative understanding of the chemical potential, a topic that students invariably find difficult. Three ‘‘meanings’’ for the chemical potential are stated and then supported by analytical development. Two substantial applications—depression of the melting point and batteries—illustrate the chemical potential in action. The origin of the term ‘‘chemical potential’’ has...
متن کاملDeconfinement at finite chemical potential
In a confining, renormalisable, Dyson-Schwinger equation model of two-flavour QCD we explore the chemical-potential dependence of the dressed-quark propagator, which provides a means of determining the behaviour of the chiral and deconfinement order parameters, and low-energy pion observables. We find coincident, first order deconfinement and chiral symmetry restoration transitions at μc = 375M...
متن کاملLattice Simulations with Chemical Potential
After giving an overview of recently invented methods for simulating lattice QCD at small µ/T , we discuss some results for bulk thermodynamic quantities of QCD matter coming from those methods. We focus on the transition line and the critical endpoint in the QCD phase diagram.
متن کاملConstant chemical potential approach for quantum chemical calculations in electrocatalysis
In order to simulate electrochemical reactions in the framework of quantum chemical methods, density functional theory, methods can be devised that explicitly include the electrochemical potential. In this work we discuss a Grand Canonical approach in the framework of density functional theory in which fractional numbers of electrons are used to represent an open system in contact with an elect...
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ژورنال
عنوان ژورنال: Nature Photonics
سال: 2014
ISSN: 1749-4885,1749-4893
DOI: 10.1038/nphoton.2014.186