“…• the exponent 7/12 + ε obtained by Coleman [4, Theorem 1.1] corresponds to a celebrated result by Huxley [13] (henceforth, ε denotes a sufficiently small, positive constant, not necessarily the same in each occurrence); • the exponent 11/20 that follows from [7, Theorem 4] corresponds to the main result of Heath-Brown and Iwaniec [12]; • Theorem 1 corresponds to the existence of rational primes in all intervals (x − x 0.53 , x] with x ≥ x 0 , and compares with recent results by Baker and Harman [1] and by Baker, Harman and Pintz [3] in which the lengths of the intervals are x 0.535 and x 0.525 , respectively. Our method is an adaptation to algebraic number fields of the sieve method introduced by the first author [8,9] and shares many features with [2] and [3].…”