Conn. Gen. Stat. § 47a-11a: Abandonment of unit by tenant.

(a) If the tenant abandons the dwelling unit, the landlord shall make reasonable efforts to rent it at a fair rental in mitigation of damages.

(b) If the landlord fails to use reasonable efforts to rent the dwelling unit at a fair rental, the rental agreement is deemed to be terminated by the landlord as of the date the landlord has notice of the abandonment.