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