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| 1 | < | \documentclass[prb,aps,twocolumn]{revtex4} |
| 1 | > | %\documentclass[prb,aps,twocolumn]{revtex4} |
| 2 | ||
| 3 | + | \documentclass[11pt]{revtex4} |
| 4 | + | |
| 5 | \usepackage{amsmath} | |
| 6 | \usepackage{palatino} | |
| 7 | %\usepackage{berkeley} | |
| – | Removed lines |
| + | Added lines |
| < | Changed lines |
| > | Changed lines |