Between Vacuum and Time: Contemporary Explorations in Fundamental Physics

Modern physics has radically transformed our understanding of the universe, revealing that what we perceive as empty is far from just empty space. Instead, the vacuum is a dynamic scenario filled with quantum fluctuations, dark energy, and still-enigmatic processes that defy our intuition and test the limits of the most advanced physical theories. This book brings together a series of studies that explore these ideas from various perspectives, integrating classical and quantum concepts, and delving into central issues such as the cosmological constant, the nature of space-time, vacuum energy in the context of black holes, and attempts to formulate a unified theory of quantum gravity.In addition, topics that connect theoretical physics with broader questions about the origin of the universe, illustrated through the study of the cosmic microwave background, and grounded speculations about the possibility of time travel are addressed. Exploring everything from quantum fluctuations to time machines, this book invites the reader to walk the frontiers of contemporary scientific knowledge, in search of answers to some of the most profound and fascinating questions about the nature of reality. Read more