Its basic world view suggests nondualism and thus teaches the liberation of beings from the illusion of separation, also known as maya (illusion). This is a classic eastern ideology familiar to both Buddhism and Hinduism. In his book True Meditation, Adyashanti confirms this view when saying, "...in the end spirituality is not about watching the breath. It's about waking up from the dream of separateness to the truth of unity (pg. 15)." Theory
The basic concept of this ideology is that humans tend to identify with a sense of self that is essentially not real, or sometimes called empty. The Buddha called this idea no-self, or anatta. Suffering is thus said to be caused by the belief in a separate self that seems to be divided from the world. If someone was to realize that they, as an individually isolated self, was not real, but that there is only one being, known as Buddha-nature in Buddhism or Brahman in Advaita Vedanta, then they would be awakened to the true nature of their being, oneness. To have such an awakening is to realize that there is no me and no other, there is only one. One being, one universe, one everything. Adyashanti illustrates this idea when he says, "There is only life living itself, life seeing itself, life hearing itself, life meeting itself as each moment (My Secret is Silence, pg. 27)." Suffering, however, does not necessarily end here. After an awakening it is suggested that there is often a long process of embodiment where the old beliefs of the body and mind, sometimes called sanskaras, gradually yield to the new understanding of one's true nature. Structure
Though heavily influenced by his Zen background, Adyashanti's teaching structure is unique from, and is not considered, traditional Japanese Zen. He offers public events known as Satsangs where he gives a Dharma talk and then engages the audience with Questions and Answers. Sometimes these Satsangs are given in an all day, or weekend long, format and are simply called Intensives. He also offers silent retreats several times a year which is an example of his Zen influence. On these retreats participants refrain from speaking for several days, except during the Q&A in Satsangs, and also practice several hours of silent sitting. 
Methods
Adyashanti's basic teaching methods are his public interactions at Satsangs, and what he calls True Meditation. True Meditation is the form of meditation that he suggests his students practice while on his retreats. It has two components, silent sitting and meditative Self-Inquiry. In silent sitting, the purpose is for the practitioner to let go of control and let his/her attention to rest in the natural state that it is already in. He states, "When you cease trying to control and manipulate your experience, meditation spontaneously happens (The Impact of Awakening, pg 23)." Then, with meditative Self-Inquiry, the student can ask what are considered to be spiritually significant questions. These questions are meant to expose illusionary thoughts and give rise to insight. An example of such a question is the "who am I?" inquiry, popularized by Ramana Maharshi. In My Secret is Silence Adyashanti explains, "A spiritual question is like an alarm clock thrown into the dream. "Who am I?" calls into question everything the dreamer believes in, namely him or herself. It disrupts the dream. That's its purpose (pg 25)."
" These teachers are listed below.