The new novel “R.A.B” — Rational Alternative to Unemployment—by the cult writer Sergei Minaev is perhaps the most anticipated book of the current year. “R.A.B” is a disaster novel, a book about a hangover that comes after a long euphoric high from stock price growth and cheaper consumer loans, which turned a middle-level manager into an icon of modern Russia. Now the main character, just recently discussing the merits of mortgage schemes, goes out into the streets to build barricades.