Who are you? Can you tell us something about yourself?

Gerrit Schierholz, Professor at Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany. Spokesperson of WP10, LatticeQCD.

You are leading an activity within the HP3 project? Which are the scientifically exciting aspects of your research project?

Lattice QCD provides the only ab initio method for performing QCD calculations in the low-energy regime, and for acquiring a quantitive description of the physics of hadrons and nuclear forces with controlled systematic errors. Arguably, Lattice QCD is the only technique that can challenge the experimental program at the participating research laboratories. Significant progress in this field of research has been made over the last couple of years through (i) improved formulations of QCD on the lattice, which reduce systematic errors due to finiteĀ  lattice spacing, (ii) the development of new algorithms and efficient codes, which enables effective use of a wide range of computers and (iii) the increase in computing power under the umbrella of HadronPhysics2. This project will build on those successes to address new challenges that must be met to advance the study of QCD and provide precision calculations of many more complicated quantities.

Who are the participants to your project?

C. Alexandrou (Nicosia), M. D'Elia (Pisa), F. Di Renzo (Parma), C. Gattringer (Graz), S. Hands (Swansea), R. Horsley (Edinburgh), E. Laermann (Bielefeld), K. Langfeld (Plymouth), M. Lombardo (Frascati), O. Philipsen (Frankfurt), P. Rakow (Liverpool), K. Rummukainen (Helsinki), A. Schiller (Leipzig), L. Scorzato (Trento)

What do you want to achieve with this activity?

Precision calculations of

  • the hadron spectrum, including unstable particles,

  • parton distribution functions of hadrons, in particular the spin content of the nucleon

  • form factors and generalized parton distribution functions, for a three-dimensional (holographic) picture of the nucleon

  • CKM matrix elements, (g-2) of the muon, the electric dipole moment of the nucleon

  • the QCD phase diagram

  • the equation of state at zero and nonzero baryon density

  • fluctuations of baryon number, isospin, charge and strangeness in heavy ion collision

In which way your activity could be of benefit for the society?

The study of matter and their interactions is an international enterprise, which plays a key role in the future progress of mankind. The support of physics education and research in all countries is important because physics (i) is an exciting intellectual adventure that inspires young people and expands the frontiers of our knowledge about nature, (ii) generates fundamental knowledge needed for the future technological advances that will continue to drive the economic engines of the world, (iii) contributes to the technological infrastructure and provides trained personnel needed to take advantage of scientific advances and discoveries, (iv) is an important element in the education of chemists, engineers and computer scientists, as well as practitioners of the other physical and biomedical sciences, (v) extends and enhances our understanding of other disciplines, such as the earth, agricultural, chemical, biological, and environmental sciences, plus astrophysics and cosmology - subjects of substantial importance to all peoples of the world, and last not least (vi) improves our quality of life by providing the basic understanding necessary for developing new instrumentation and techniques for medical applications, such as computer tomography, magnetic resonance imaging, positron emission tomography, ultrasonic imaging, and laser surgery.

Why do you thinkĀ  a young person should choose to study science and is there any reason for which should they do so in Europe?

Physics is crucial to understanding the world around us, the world inside us, and the world beyond us. It is the most basic and fundamental science. Moreover, it is the basis of many other sciences, including chemistry, oceanography, seismology, and astronomy. Europe offers some of the very best research facilities.

The HadronPhysics3 project is supported by the European Union
under the 7th Framework Capacities Programme in the area of Research Infrastructures (RI).