Science & Mathematics

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.

Mazkur maqolada raqamli transformatsiya sharoitida aksiyadorlik tijorat banklarida korporativ boshqaruvtizimini xalqaro standartlar asosida takomillashtirish masalalari kompleks tarzda tahlil qilingan. Bank tizimida korporativboshqaruvning samaradorligi ularning moliyaviy barqarorligi, investitsion jozibadorligi hamda kreditlash salohiyatinibelgilovchi muhim omillardan biri hisoblanadi. Tadqiqot doirasida aksiyadorlik tijorat banklarida raqamli muhitda korporativboshqaruvni tashkil etish bilan bog‘liq dolzarb muammolar, jumladan, aksiyadorlar va boshqaruv organlari o‘rtasidagimunosabatlarda shaffoflikning yetarli darajada ta’minlanmasligi, raqamli likvidlik va risklarni boshqarishdagi murakkabliklar,global moliyaviy bozorlardagi o‘zgaruvchanlik hamda foiz siyosatiga texnologik omillarning ta’siri atroflicha yoritilgan.Aniqlangan muammolarni bartaraf etish maqsadida korporativ boshqaruvni xalqaro standartlar asosida rivojlantirish,xususan, boshqaruv jarayonlarida ochiqlik va hisobdorlikni kuchaytirish, risk-menejment tizimini takomillashtirish hamdaaksiyadorlar manfaatlarini himoya qilish mexanizmlarini mustahkamlash zarurligi asoslab berilgan. Shuningdek, raqamlitransformatsiya jarayonida moliyaviy savodxonlikni oshirish, boshqaruv jarayonlariga fintex yechimlarini integratsiyaqilish, innovatsion raqamli mahsulotlar — mobil banking, blokcheyn texnologiyalari va sun’iy intellekt asosidagi qarorqabul qilish tizimlarini joriy etish muhim yo‘nalishlar sifatida tavsiya etilgan.

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.

Continuous symmetries lead to universal slow relaxation of correlation functions in quantum many-body systems. In this work, we study how local symmetry-breaking impurities affect the dynamics of these correlation functions using Brownian quantum circuits, which we expect to apply to generic non-integrable systems with the same symmetries. While explicitly breaking the symmetry is generally expected to lead to eventual restoration of full ergodicity, we find that approximately conserved quantities that survive under such circumstances can still induce slow relaxation. This can be understood using a super-Hamiltonian formulation, where low-lying excitations determine the late-time dynamics and exact ground states correspond to conserved quantities. We show that in one dimension, symmetry-breaking impurities modify diffusive and subdiffusive behaviors associated with U$(1)$ and dipole conservation at late-times, e.g., by increasing power-law decay exponents of the decay of autocorrelation functions. This stems from the fact that for these symmetries, impurities are relevant in the renormalization group sense, e.g., bulk impurities effectively disconnect the system, completely modifying both temporal and spatial correlations. On the other hand, for an impurity that disrupts strong Hilbert space fragmentation, the super-Hamiltonian only acquires an exponentially small gap, leading to prethermal plateaus in autocorrelation functions which extend for times that scale exponentially with the distance to the impurity. Overall, our approach systematically characterizes how symmetry-breaking impurities affect relaxation dynamics in symmetric systems.