1 Departament de Fìsica i Enginyeria Nuclear, Campus Nord B4-B5, Universitat Politècnica de Catalunya, Barcelona, Spain G.E. Astrakharchik, J. Boronat, O.N.Osychenko, Yu.E. Lozovik, Y. Lutsyshyn Grenoble, 7th of July, 2010 MONTE CARLO STUDY OF QUANTUM PHASE DIAGRAM OF RYDBERG ATOMS WITH REPULSIVE 1/r 6 INTERACTION

2 MOTIVATION

3 INTERACTION POTENTIAL

4 MODEL HAMILTONIAN

5 MONTE CARLO METHODS

6 GUIDING WAVE FUNCTION

7 CLASSICAL CRYSTAL

8 QUANTUM ZERO-TEMPERATURE PHASE TRANSITION

9 TYPICAL NUMBERS

10 LOW TEMPERATURE

11 HIGH TEMPERATURE

12 PEAK IN STRUCTURE FACTOR

13 TEMPERATURE GAS-SOLID TRANSITION

14 PHASE DIAGRAM

15 FCC vs HCP

16 WHICH MASS/KINETIC ENERGY?

17 CONCLUSIONS

18 THANK YOU VERY MUCH FOR YOUR ATTENTION!

19

20

21

22

23 INTERACTION POTENTIAL